Service Manual Trucks
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1641375355 mack-truck-service-manual-dtcs-mru-leu Service Manual Trucks
Group 28 Engine Control Module (ECM), Diagnostic Trouble Code
(DTC), Guide 2010 Emissions
MRU, LEU
PV776-88969578
Foreword
The descriptions and service procedures contained in this manual are based on designs and methods studies carried out up to April 2010. The products are under continuous development. Vehicles and components produced after the above date may therefore have different specifications and repair methods. When this is believed to have a significant bearing on this manual, supplementary service bulletins will be issued to cover the changes. The new edition of this manual will update the changes. In service procedures where the title incorporates an operation number, this is a reference to a Labor Code (Standard Time). Service procedures which do not include an operation number in the title are for general information and no reference is made to a Labor Code (Standard Time). Each section of this manual contains specific safety information and warnings which must be reviewed before performing any procedure. If a printed copy of a procedure is made, be sure to also make a printed copy of the safety information and warnings that relate to that procedure. The following levels of observations, cautions and warnings are used in this Service Documentation: Note: Indicates a procedure, practice, or condition that must be followed in order to have the vehicle or component function in the manner intended. Caution: Indicates an unsafe practice where damage to the product could occur. Warning: Indicates an unsafe practice where personal injury or severe damage to the product could occur. Danger: Indicates an unsafe practice where serious personal injury or death could occur.
Mack Trucks, Inc.
Greensboro, NC USA
Order number: PV776-88969578 Repl:
©2010 Mack Trucks, Inc., Greensboro, NC USA All rights reserved. No part of this publication may be reproduced, stored in retrieval system, or transmitted in any forms by any means, electronic, mechanical, photocopying, recording or otherwise, without the prior written permission of Mack Trucks, Inc.
USA41614
Contents
Troubleshooting .......................................................................................................................... 3 Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs) ..................................................... 3
1
2
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
Troubleshooting
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
The manufacturer scan tool is the preferred tool for performing diagnostic work. Contact your local dealer for more information or visit "www.premiumtechtool.com".
Note: The use of a scan tool is necessary to perform diagnostic work as well as clearing of any diagnostic trouble codes (DTCs). DTC(s) can no longer be cleared using the vehicles instrument cluster digital display and stalk switch control.
System Overview
Six electronic control units (ECUs) are used; the engine control module (ECM), instrument control module (ICM), Vehicle Electronic Control Unit (VECU), transmission control module (TCM), the gear selector control module (GSCM) and the aftertreatment control module (ACM). Together, these modules operate and communicate through the SAE J1939 data links to control a variety of engine and vehicle cab functions. The ECM controls such things as fuel timing and delivery, fan operation, engine protection functions, engine brake operation, the exhaust gas recirculation (EGR) valve and the turbocharger nozzle. The VECU controls cruise control functions, accessory relay controls and idle shutdown functions. The ICM primarily displays operational parameters and communicates these to the other ECUs. All have the capability to communicate over the SAE J1587 data link primarily for programming, diagnostics and data reporting.
In addition to their control functions, the modules have on board diagnostic (OBD) capabilities. The OBD is designed to detect faults or abnormal conditions that are not within normal operating parameters. When the system detects a fault or abnormal condition, the fault will be logged in one or both of the modules' memory, the vehicle operator will be advised that a fault has occurred by illumination a malfunction indicator lamp (MIL) and a message in the driver information display, if equipped. The module may initiate the engine shutdown procedure if the system determines that the fault could damage the engine.
The use of a scan tool is necessary to perform diagnostic work as well as clearing of any diagnostic trouble codes (DTCs). DTC(s) can no longer be cleared using the vehicles instrument cluster digital display and stalk switch control. Additional data and diagnostic tests are available when a scan tool is connected to the Serial Communication Port.
For diagnostic software, contact your local dealer.
The ECM is a microprocessor based controller programmed to perform fuel injection quantity and timing control, diagnostic fault logging, and to broadcast data to other ECUs. The fuel quantity and injection timing to each cylinder is precisely controlled to obtain optimal fuel economy and reduced exhaust emissions in all driving situations.
The ECM controls the operation of the injectors, engine brake solenoid, EGR valve, turbocharger nozzle position, and cooling fan clutch based on inputs from many sensors and information received over the data links from other ECUs.
The VECU and ECM are dependent on each other to perform their specific control functions. In addition to switch and sensor data, the broadcast of data between modules also includes various calculations and conclusions that each module has developed, based on the input information it has received.
In some situations when a fault is detected, the system will enter a "derate" mode. The derate mode allows continued vehicle operation but the system may substitute a sensor or signal value that may result in reduced performance. In some instances, the system will continue to function but engine power may be limited to protect the engine and vehicle. Diagnostic trouble codes (DTCs) logged in the system memory can later be read, to aid in diagnosing the problem using a diagnostic computer or through the instrument cluster display, if equipped. When diagnosing an intermittent DTC or condition, it may be necessary to use a scan tool connected to the Serial Communication Port.
3
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
System Electronic Control Unit (ECU) Overview
The engine control module (ECM) monitors and models (using physical principles) engine parameters to monitor the engine system's performance in real time. This is performed to aid the ECM with its self diagnostic capabilities. Many sensors are used for input to the emission control system.
The system contains the following "emission critical" ECUs that are monitored;
· Engine Control Module (ECM) · Vehicle Electronic Control Unit (VECU) · Aftertreatment Control Module (ACM) · Aftertreatment Nitrogen Oxides (NOx) Sensors · Engine Variable Geometry Turbocharger (VGT) Smart
Remote Actuator (SRA)
These ECUs all communicate with the ECM via data links. The VECU communicates across the SAE J1939 (CAN1) data link while the others use the SAE J1939-7 (CAN2) data link. The OBD systems use SAE J1939 data link protocol for communication with scan tools but, MACK trucks still are capable of communicating via the SAE J1587 data link for diagnostics. The use of a scan tool is necessary to perform diagnostic work as well as clearing of any diagnostic trouble codes (DTCs). DTC(s) can no longer be cleared using the vehicles instrument cluster digital display and stalk switch control.
There are other ECUs such as the Instrument Control Module (ICM), Transmission Control Module (TCM) and Anti-lock Brake System (ABS) Module that provide data to the emission control system or the diagnostic system but are not "emission critical".
Malfunction Indicator Lamp (MIL), Description and Location
A MIL located in the instrument cluster. This amber colored lamp is used to inform the driver that a "emission critical" malfunction signal has occurred.
W2036007
SAE J1939 Data Link Communication
The electronic control units (ECUs) that communicate on the SAE J1939 data link, communicate according to the SAE J1587 standard. The diagnostic trouble codes (DTCs) set by the ECUs contain information that is described by the following abbreviations.
SA
Source Address:
Identification of a control module.
SPN
Suspect Parameter Number: Identification of a parameter (value).
FMI
Failure Mode Identifier:
Identification of fault types.
4
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
SAE J1939 FMI Table
FMI
SAE Text
0
Data valid but above normal operational range - Most severe level
1
Data valid but below normal operational range - Most severe level
2
Data erratic, intermittent or incorrect
3
Voltage above normal, or shorted to high source
4
Voltage below normal, or shorted to low source
5
Current below normal or open circuit
6
Current above normal or grounded circuit
7
Mechanical system not responding or out of adjustment
8
Abnormal frequency or pulse width or period
9
Abnormal update rate
10
Abnormal rate of change
11
Root cause not known
12
Bad intelligent device or component
13
Out of calibration
14
Special instructions
15
Data valid but above normal operating range - Least severe level
16
Data valid but above normal operating range - Moderately severe level
17
Data valid but below normal operating range - Least severe level
18
Data valid but below normal operating range - Moderately severe level
19
Received network data in error
20
Reserved for SAE assignment
21
Reserved for SAE assignment
22
Reserved for SAE assignment
23
Reserved for SAE assignment
24
Reserved for SAE assignment
25
Reserved for SAE assignment
26
Reserved for SAE assignment
27
Reserved for SAE assignment
28
Reserved for SAE assignment
29
Reserved for SAE assignment
30
Reserved for SAE assignment
31
Condition exists
5
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
SAE J1587 Data Link Communication
The electronic control units (ECUs) also communicate on the SAE J1587 data link. These ECUs communicate according to the SAE J1587 standard. The standard has been extended with MACK's supplement (PPID, PSID). The diagnostic trouble codes (DTCs) set by the ECUs contain information that is described by the following abbreviations.
MID
Message Identification Description:
Identification of a control module.
PID
Parameter Identification Description:
Identification of a parameter (value).
PPID SID PSID FMI
SAE J1587 FMI Table
FMI
SAE Text
0
Data valid, but above the normal working range
1
Data valid, but below the normal working range
2
Intermittent or incorrect data
3
Abnormally high voltage or short circuit to higher voltage
4
Abnormally low voltage or short circuit to lower voltage
5
Abnormally low current or open circuit
6
Abnormally high current or short circuit to ground
7
Incorrect response from a mechanical system
8
Abnormal frequency
9
Abnormal update rate
10
Abnormally strong vibrations
11
Non-identifiable fault
12
Faulty module or component
13
Calibration values outside limits
14
Special instructions
15
Reserved for future use
Proprietary Parameter Identification Description Mack: Unique identification of a parameter (value).
Subsystem Identification Description: Identification of a component.
Proprietary Subsystem Identification Description Mack: Unique identification of a component.
Failure Mode Identifier: Identification of fault types.
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Group 28
Diagnostic Trouble Code (DTC) Content
SPN 0500
· "ECM SPN 84, Wheel-Based Vehicle Speed MID 128
PID 84", page 14
· "ECM SPN 91, Accelerator Pedal Position 1 MID 128
PID 91", page 14
· "ECM SPN 94, Engine Fuel Delivery Pressure MID 128
PID 94", page 14
· "ECM SPN 97, Water in Fuel Indicator MID 128 PID 97",
page 15
· "ECM SPN 98, Engine Oil Level MID 128 PID 98", page
16
· "ECM SPN 100, Engine Oil Pressure MID 128 PID 100",
page 17
· "ECM SPN 102, Engine Intake Manifold 1 Pressure MID
128 PID 102", page 17
· "ECM SPN 103, Engine Turbocharger 1 Speed MID 128
PID 103", page 18
· "ECM SPN 105, Engine Intake Manifold 1 Temperature
MID 128 PID 105", page 19
· "ECM SPN 108, Barometric Pressure MID 128 PID 108",
page 20
· "ECM SPN 110, Engine Coolant Temperature MID 128
PID 110", page 20
· "ECM SPN 111, Engine Coolant Level MID 128 PID 111",
page 21
· "ECM SPN 153, Engine High Resolution Crankcase
Pressure MID 128 PID 153/PSID 23", page 22
· "ECM SPN 158, Keyswitch Battery Potential MID 128
PID 158/PSID 124", page 23
· "ECM SPN 171, Ambient Air Temperature MID 128 PID
171", page 23
· "ECM SPN 173, Engine Exhaust Gas Temperature (EGT)
MID 128 PID 173 ", page 24
· "ECM SPN 175, Engine Oil Temperature 1 MID 128 PID
175", page 25
· "ECM SPN 177, Transmission Oil Temperature MID 128
PID 177", page 26
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
7
Group 28
· "ECM SPN 188, Engine Speed At Idle, Point 1 (Engine
Configurations) MID 128 PID 188", page 26
· "ECM SPN 190, Engine Speed MID 128 PID 190", page
27
· "ECM SPN 228, Speed Sensor Calibration MID 128 PID
228", page 27
· "ECM SPN 237, Vehicle Identification Number MID 128
PSID 161/162", page 27
· "ECM SPN 245, Total Vehicle Distance MID 128 PID
245", page 28
· "ECM SPN 251, Time MID 128 PID 251", page 28 · "ECM SPN 252, Date MID 128 PID 252", page 29 · "ECM SPN 411, Engine Exhaust Gas Recirculation
Differential Pressure MID 128 PID 411", page 29
· "ECM SPN 412, Engine Exhaust Gas Recirculation
Temperature MID 128 PID 412", page 30
SPN 500999
· "ECM SPN 558, Accelerator Pedal 1 Idle Validation Switch
MID 128 SID 230", page 31
· "ECM SPN 626, Intake Air Heater (IAH) Relay MID 128
PID 45", page 32
· "ECM SPN 628, Program Memory MID 128 SID 240",
page 32
· "ECM SPN 629, Electronic Control Unit (ECU) 1 MID
128 SID 254", page 33
· "ECM SPN 630, Calibration Memory MID 128 SID 253",
page 33
· "ECM SPN 631, Calibration Module MID 128 PSID
77/PSID 124", page 34
· "ECM SPN 633, Engine Fuel Actuator 1 Control Command
MID 128 SID 18", page 34
· "ECM SPN 636, Camshaft Position Sensor (CMP) MID
128 SID 21", page 35
· "ECM SPN 637, Crankshaft Position Sensor (CKP) MID
128 SID 22", page 36
· "ECM SPN 639, SAE J1939 Data Link 1 MID 128 SID
231", page 37
· "ECM SPN 641, Engine Variable Geometry Turbocharger
(VGT) Actuator 1 MID 128 SID 27", page 37
· "ECM SPN 642, Engine Variable Geometry Turbocharger
(VGT) Actuator 2 MID 128 PPID 89", page 38
· "ECM SPN 647, Engine Fan Clutch Output Device Driver
MID 128 SID 33", page 38
· "ECM SPN 651, Engine Injector Cylinder 1 MID 128 SID
1", page 39
· "ECM SPN 652, Engine Injector Cylinder 2 MID 128 SID
2", page 40
8
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
Group 28
· "ECM SPN 653, Engine Injector Cylinder 3 MID 128 SID
3", page 40
· "ECM SPN 654, Engine Injector Cylinder 4 MID 128 SID
4", page 41
· "ECM SPN 655, Engine Injector Cylinder 5 MID 128 SID
5", page 42
· "ECM SPN 656, Engine Injector Cylinder 6 MID 128 SID
6", page 43
· "ECM SPN 677, Engine Starter Motor Relay MID 128
SID 39", page 43
· "ECM SPN 729, Intake Air Heater (IAH) 1 MID 128 SID
70", page 44
· "ECM SPN 730, Intake Air Heater (IAH) 2 MID 128 SID
71", page 44
· "ECM SPN 975, Estimated Percent Fan Speed (MID 128
PID 26)", page 45
SPN 10001999
· "ECM SPN 1072, Engine Compression Brake Output #1
MID 128 PPID 122", page 46
· "ECM SPN 1127, Engine Turbocharger Intake Manifold
Pressure (IMP) MID 128 PSID 98", page 47
· "ECM SPN 1136, Engine Control Module (ECM)
Temperature MID 128 PPID 55", page 48
· "ECM SPN 1198, Antitheft Random Number MID 128
PID 224", page 48
· "ECM SPN 1231, SAE J1939 Data Link 2 MID 128 PSID
229/232", page 49
· "ECM SPN 1265, Engine Piston Cooling Oil Pressure
Actuator MID 128 SID 85", page 49
· "ECM SPN 1322, Engine Misfire for Multiple Cylinders
MID 128 PSID 27", page 50
· "ECM SPN 1659, Engine Coolant System Thermostat
MID 128 PSID 109", page 50
· "ECM SPN 1675, Engine Starter Mode MID 128 SID
39", page 50
· "ECM SPN 1677, Aftertreatment DPF Auxiliary Heater
Mode MID 128 PSID 25", page 51
· "ECM SPN 1761, Aftertreatment Diesel Exhaust Fluid
(DEF) Tank Level PPID 278", page 51
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
9
Group 28
SPN 20002999
· "ECM SPN 2003, Transmission Control Module (TCM)
Status MID 128 PSID 205", page 52
· "ECM SPN 2017, Cruise Control Status MID 128 PID
85", page 52
· "ECM SPN 2029, Invalid or Missing Data from Vehicle ECU
MID 128 PSID 201", page 52
· "ECM SPN 2629, Engine Turbocharger Compressor Outlet
Temperature MID 128 PID 404", page 53
· "ECM SPN 2659, Engine Exhaust Gas Recirculation (EGR)
Mass Flow Rate MID 128 PPID 35", page 53
· "ECM SPN 2791, Engine Exhaust Gas Recirculation (EGR)
Valve Control MID 128 SID 146", page 54
· "ECM SPN 2836, Battery Potential/Switched Voltage MID
128 PSID 49", page 54
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
10
Group 28
SPN 30003999
· "ECM SPN 3031, Aftertreatment Diesel Exhaust Fluid
(DEF) Tank Temperature MID 128 PPID 274", page 55
· "ECM SPN 3064, Aftertreatment DPF System Monitor
MID 128 PPID 326", page 55
· "ECM SPN 3216, Aftertreatment Intake NOx MID 128
PPID 348", page 56
· "ECM SPN 3226, Aftertreatment Outlet NOx MID 128
PPID 270/ PSID 90", page 56
· "ECM SPN 3245, Aftertreatment DPF Outlet Temperature
MID 128 PPID 436", page 57
· "ECM SPN 3249, Aftertreatment DPF Intake Temperature
MID 128 PPID 387", page 58
· "ECM SPN 3250, Aftertreatment Diesel Particulate Filter
(DPF) Intermediate Gas Temperature MID 128 PPID 440/ PSID 22", page 59
· "ECM SPN 3251, Aftertreatment DPF Differential Pressure
MID 128 PID 81", page 60
· "ECM SPN 3363, Aftertreatment Diesel Exhaust Fluid
(DEF) Tank Heater MID 128 PSID 75", page 61
· "ECM SPN 3471, Aftertreatment Fuel Pressure Control
Actuator/ MP8 Engine MID 128 PPID 328", page 61
· "ECM SPN 3471, Aftertreatment Fuel Pressure Control
Actuator/ MP7 Engine MID 128 PSID 111", page 62
· "ECM SPN 3472, Aftertreatment Diesel Particulate Filter
(DPF) Air Pressure Control Actuator MID 128 PSID 58", page 63
· "ECM SPN 3473, Aftertreatment Failed to Ignite MID 128
PSID 22", page 64
· "ECM SPN 3480, Aftertreatment Diesel Particulate Filter
(DPF) Fuel Pressure/ MP8 Engine MID 128 PPID 437/PSID 108", page 64
· "ECM SPN 3480, Aftertreatment Diesel Particulate Filter
(DPF) Fuel Pressure/ MP7 Engine MID 128 PPID 437", page 65
· "ECM SPN 3482, Aftertreatment Diesel Particulate Filter
(DPF) Fuel Shutoff Valve MID 128 PPID 328", page 66
· "ECM SPN 3483, Aftertreatment Regeneration Status
MID 128 PSID 47", page 66
· "ECM SPN 3484, Aftertreatment Ignition MID 128 PSID
110/PSID 127", page 67
· "ECM SPN 3485, Aftertreatment Diesel Particulate Filter
(DPF) Atomization Air Pressure MID 128 PPID 277", page 68
· "ECM SPN 3489, Aftertreatment Air Enable Actuator MID
128 PSID 122", page 69
· "ECM SPN 3491, Aftertreatment Diesel Particulate Filter
(DPF) Atomization Air Actuator MID 128 PSID 59", page 70
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
11
Group 28
· "ECM SPN 3509, Sensor Supply Voltage 1 MID 128 SID
232", page 71
· "ECM SPN 3510, Sensor Supply Voltage 2 MID 128 SID
211", page 71
· "ECM SPN 3511, Sensor Supply Voltage 3 MID 128 PSID
113", page 72
· "ECM SPN 3512, Sensor Supply Voltage 4 MID 128
PSID 126", page 72
· "ECM SPN 3522, Aftertreatment Total Fuel Used MID
128 PSID 91", page 72
· "ECM SPN 3556, Aftertreatment Hydrocarbon Doser/ MP8
Engine MID 128 PPID 329", page 73
· "ECM SPN 3556, Aftertreatment Hydrocarbon Doser/ MP7
Engine MID 128 PPID 329", page 74
· "ECM SPN 3597, Aftertreatment Diesel Particulate Filter
(DPF) Regeneration too Frequent MID 128 PSID 119", page 74
· "ECM SPN 3675, Engine Turbocharger Compressor
Bypass Valve Position MID 128 PPID 330", page 75
· "ECM SPN 3695, Aftertreatment Diesel Particulate Filter
(DPF) Switch/MP8 Engine MID 128 PSID 114", page 76
· "ECM SPN 3720, Aftertreatment DPF Ash Load Percent
MID 128 PPID 337", page 76
· "ECM SPN 3936, Aftertreatment DPF System MID 128
PSID 28", page 77
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
12
Group 28
SPN 40005500
· "ECM SPN 4094, NOx Limits Exceeded Due to Insufficient
Diesel Exhaust Fluid (DEF) Quality MID 128 PSID 90", page 77
· "ECM SPN 4095, NOx Limits Exceeded Due to Interrupted
Diesel Exhaust Fluid (DEF) Dosing MID 128 PSID 90", page 77
· "ECM SPN 4334, Afterteatment Diesel Exhaust Fluid (DEF)
Dosing Absolute Pressure MID 128 PPID 273", page 78
· "ECM SPN 4339, Aftertreatment SCR Feedback Control
Status MID 128 PSID 90", page 78
· "ECM SPN 4354, Aftertreatment Diesel Exhaust Fluid
(DEF) Line Heater 1 MID 128 PSID 103", page 79
· "ECM SPN 4356, Aftertreatment Diesel Exhaust Fluid
(DEF) Line Heater 3 MID 128 PSID 102", page 79
· "ECM SPN 4374, Aftertreatment Diesel Exhaust Fluid
(DEF) Pump Motor Speed MID 128 PSID 87", page 79
· "ECM SPN 4375, Aftertreatment Diesel Exhaust Fluid
Pump (DEF) Drive Percentage MID 128 PSID 121", page 80
· "ECM SPN 4376, Aftertreatment Diesel Exhaust Fluid
(DEF) Return Valve MID 128 PSID 105", page 81
· "ECM SPN 4752, Engine Exhaust Gas Recirculation (EGR)
Cooler Efficiency MID 128 SID 282", page 81
· "ECM SPN 4811, Engine Piston Cooling Oil Pressure
MID 128 PPID 8", page 81
· "ECM SPN 4813, Engine Oil Thermostat Bypass Valve
Opening MID 128 PSID 72", page 82
· "ECM SPN 4815, Engine Cooling Fan Thermal Switch
Position MID 128 PPID 333", page 82
· "ECM SPN 5246, Aftertreatment SCR Operator Inducement
Severity MID 128 PSID 46", page 83
· "ECM SPN 5285, Charge Air Cooler (CAC) Temperature
MID 128 PID 52", page 84
· "ECM SPN 5298, Aftertreatment Diesel Oxidation Catalyst
(DOC) Conversion Efficiency MID 128 PSID 99", page 84
· "ECM SPN 5392, Aftertreatment Diesel Exhaust Fluid
(DEF) Dosing Valve Loss of Prime MID 128 PSID 121", page 85
· "ECM SPN 5394, Aftertreatment Diesel Exhaust Fluid
(DEF) Dosing Valve MID 128 PSID 89", page 85
· "ECM SPN 5394, Aftertreatment Diesel Exhaust Fluid
(DEF) Dosing Valve MID 128 PSID 90", page 86
· "ECM SPN 5485, Aftertreatment Diesel Exhaust Fluid
(DEF) Pump Orifice MID 128 PSID 121", page 86
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
13
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
ECM SPN 84, Wheel-Based Vehicle Speed MID 128 PID 84
Type of fault:
FMI 9
FMI Description:
· Abnormal update
rate
FMI 10
· Abnormal rate of
change
· FMI 13
Out of calibration
FMI 19
· Received network
data in error
Fault Condition:
· Missing signal
from VECU
Possible Symptoms:
· Engine derate
· Vehicle speed
deemed inaccurate by VECU
· MIL illuminated
(13L engine only)
· · No vehicle speed
MIL illuminated
available to VECU (13L engine only)
· Vehicle speed
deemed inaccurate by VECU
· MIL illuminated
(13L engine only)
Possible Cause:
· SAE J1587 data link vehicle speed
message does not exist, (VECU error)
· VECU · Vehicle speed sensor (VSS) · VECU
· Vehicle speed sensor (VSS) · VECU · Vehicle speed sensor (VSS) · VECU
ECM SPN 91, Accelerator Pedal Position 1 MID 128 PID 91
Type of fault: FMI 9
FMI 13
FMI Description:
· Abnormal update
rate
· Out of calibration
FMI 10
· Abnormal rate of
change
FMI 19
· Received network
data in error
Fault Condition:
· Missing signal
from VECU
· Pedal not
connected to VECU
· Pedal position
deemed inaccurate by VECU
· Pedal position
deemed inaccurate by VECU
Possible Symptoms:
· N/A
· MIL illuminated
(13L engine only)
Possible Cause:
· SAE J1587 data link pedal information
not available
· Accelerator pedal sensor fault
· · MIL illuminated
Accelerator pedal sensor fault
(13L engine only)
· · MIL illuminated
Accelerator pedal sensor fault
(13L engine only)
ECM SPN 94, Engine Fuel Delivery Pressure MID 128 PID 94
Type of fault:
FMI 3
FMI Description:
· Voltage above
normal, or shorted to high source
Fault Condition:
· Low fuel pressure
sensor signal line voltage
Possible Symptoms:
· N/A
FMI 5 14
· Current below
normal or open circuit
· Low fuel pressure
sensor signal line voltage
· N/A
Possible Cause:
· Damaged contacts in harness · Faulty fuel pressure sensor · Open circuit. · Damaged contacts in harness · Faulty fuel pressure sensor
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
FMI 7
· Mechanical system
not responding properly
· Drop in fuel
pressure
· Engine derate
· FMI 13
Out of Calibration
· · Sensor indicates a N/A
invalid value
FMI 15 FMI 17 FMI 18
· Data valid but above
normal operating range - Least severe level
· Sensor indicates a
invalid value
· N/A
· Data valid but below
normal operating range - Least severe level
· Sensor indicates a
invalid value
· N/A
· Data valid but below
normal operating range - Moderately severe level
· Drop in fuel
pressure
· Engine derate
· Clogged fuel filter · Faulty fuel pressure sensor · Leaking fuel line or fitting · Poor fuel pump response
· Wiring harness · Faulty fuel pressure sensor · Clogged fuel filter
· Wiring harness · Faulty fuel pressure sensor
· Wiring harness · Faulty fuel pressure sensor · Clogged fuel filter
· Clogged fuel filter · Faulty fuel pressure sensor · Leaking fuel line or fitting · Poor fuel pump response
ECM SPN 97, Water in Fuel Indicator MID 128 PID 97
Type of fault: FMI 0
FMI 3
FMI Description:
Fault Condition:
· Data valid but above
normal operational range - Most severe level
· Water in fuel is
indicated
· Voltage above
normal, or shorted to high source
· N/A
FMI 4
· Voltage below
normal, or shorted to low source
· N/A
Possible Symptoms:
· Uneven running · Engine stalling
Possible Cause:
· Water in fuel
· Undetected water
in fuel supply
· Uneven running · Engine stalling
· Undetected water
in fuel supply
· Uneven running
· Open circuit
· Short to ground · Open circuit · Faulty sensor
15
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
ECM SPN 98, Engine Oil Level MID 128 PID 98
Type of fault: FMI 1
FMI 4 FMI 5
FMI 18
FMI Description:
Fault Condition:
· · Data valid but above Critically below
normal operational
range
range
· Voltage below
normal, or shorted to low source
· Short Circuit -
Positive side
· Current below
normal or open circuit
· Short Circuit +,
Positive side
· Open Circuit +,
Positive side
· Open Circuit-
Negative side
· Data valid but below
normal operating range - Moderately severe level
· Moderately below
range
· Critically below
range
Possible Symptoms:
· Red engine
shutdown or yellow electronic malfunction lamps illuminated dependent of severity
· Oil level can not
be measured
· Oil level can not
be measured
· Red engine
shutdown or Yellow electronic malfunction lamps illuminated dependent of severity
Possible Cause:
· Low oil level leakage · Critically low oil level
· Engine Oil Level (EOL) sensor failure · Faulty harness · Engine Oil Level (EOL) sensor failure · Faulty harness
· Low oil level leakage · Moderately low oil level
16
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
ECM SPN 100, Engine Oil Pressure MID 128 PID 100
Type of FMI Description: fault:
Fault Condition:
Possible Symptoms:
Possible Cause:
FMI 1 FMI 3
FMI 5
FMI 13 FMI 15 FMI 17
· · Data valid but below Critically below
normal operational
range
range
· Engine derate · Low pressure · Red engine
shutdown lamp
illuminated
· Oil leakage · Broken oil pump · Clogged oil system
· Voltage below
normal or shorted low
· Short Circuit +,
Measuring line
· Open Circuit,
Ground line
· Oil pressure
shows 0 in the cluster, engine is running
· Yellow electronic
malfunction lamp illuminated
· Engine Oil Pressure (EOP) sensor
failure
· Faulty harness
· Current below
normal or open circuit
· Open Circuit +, 5V
Supply line
· Short Circuit -,
Measuring line
· Open Circuit,
Measuring line
· Oil pressure
shows 0 in the cluster, engine is running
· Yellow electronic
malfunction lamps illuminated
· Engine Oil Pressure (EOP) sensor
failure
· Faulty harness
· Out of Calibration
· Sensor indicates a
invalid value
· Oil pressure
shows 0 in the cluster, engine is running
· Engine Oil Pressure (EOP) sensor
failure
· Faulty harness
· Data valid but above
normal operating range - Least severe level
· Sensor indicates a
invalid value
· Oil pressure
shows 0 in the cluster, engine is running
· Engine Oil Pressure (EOP) sensor
failure
· Faulty harness
· Data valid but below
normal operating range - Least severe level
· Sensor indicates a
invalid value
· Oil pressure
shows 0 in the cluster, engine is running
· Engine Oil Pressure (EOP) sensor
failure
· Faulty harness
ECM SPN 102, Engine Intake Manifold 1 Pressure MID 128 PID 102
Type of fault:
FMI 2
FMI Description:
· Data erratic,
intermittent or incorrect
Fault Condition:
· Intake Manifold
Pressure Sensor output is too high or too low
Possible Symptoms:
· Engine derate · MIL lamp
illuminated
Possible Cause:
· Faulty harness · Intake Manifold Pressure sensor
17
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
FMI 3
FMI 5 FMI 12 FMI 13 FMI 14 FMI 15 FMI 17
· Voltage above
normal, or shorted to high source
· Current below
normal or open circuit
· Bad intelligent
device or component
· Out of Calibration
· A short to battery
in the metering circuit
· An open in the
ground circuit of the Intake Manifold Pressure Sensor
· Engine derate · MIL lamp
illuminated
· A short to ground
in the harness
· An open in the 5
volt supply circuit
· An open in the
metering circuit
· Engine derate · MIL lamp
illuminated
· Intake Manifold
Pressure sensor
output is too high
· Sensor indicates
a invalid value
· Engine derate · MIL lamp
illuminated
· Sensor indicates
a invalid value
· Engine derate · MIL lamp
illuminated
· Special instructions
· Intake Manifold
Pressure sensor
output is too low
· Sensor indicates
a invalid value
· Data valid but above
normal operating range - Least severe level
· Intake Manifold
Pressure sensor output is too high
· Data valid but below
normal operating range - Least severe level
· Sensor indicates
a invalid value
· Engine derate · MIL lamp
illuminated
· Engine derate · MIL lamp
illuminated
· Engine derate · MIL lamp
illuminated
· Faulty harness · Harness connectors · Intake Manifold Pressure sensor
· Faulty harness · Harness connectors · Intake Manifold Pressure sensor
· Faulty harness · Intake Manifold Pressure sensor
· Faulty harness · Harness connectors · Intake Manifold Pressure sensor · Faulty harness · Intake Manifold Pressure sensor · Inlet air leakage
· Faulty harness · Harness connectors · Intake Manifold Pressure sensor · Faulty harness · Harness connectors · Intake Manifold Pressure sensor
ECM SPN 103, Engine Turbocharger 1 Speed MID 128 PID 103
Type of fault:
FMI 0
FMI Description:
Fault Condition:
· Data valid but above
normal operational range
· Turbocharger
speed is at least 25% greater than the target wheel speed for the measured boost
Possible Symptoms:
· Engine derate · MIL illuminated
Possible Cause:
· Miss detection · Faulty harness · Faulty harness connector · Turbocharger Speed Sensor
18
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
FMI 1 FMI 9 FMI 15 FMI 17
· Data valid but below
normal operational range - Most severe level
· Abnormal update
rate
· Data valid but above
normal operating range - Least severe level
· Data valid but below
normal operating range - Least severe level
· Turbocharger
speed is at least 25% less than the target wheel speed for the measured boost
· A fault is logged if
the Turbocharger Speed Sensor signal is lost
· Turbocharger
speed is at least 25% greater than the target wheel speed for the measured boost
· Turbocharger
speed is at least 25% less than the target wheel speed for the measured boost
· Engine derate · MIL illuminated
· Engine derate · MIL illuminated
· Engine derate · MIL illuminated
· Engine derate · MIL illuminated
· Miss detection · Faulty harness · Faulty harness connector · Turbocharger Speed Sensor
· Faulty harness · Faulty harness connector · Turbocharger Speed Sensor
· Miss detection · Faulty harness · Faulty harness connector · Turbocharger Speed Sensor
· Miss detection · Faulty harness · Faulty harness connector · Turbocharger Speed Sensor
ECM SPN 105, Engine Intake Manifold 1 Temperature MID 128 PID 105
Type of fault: FMI 0 FMI 2
FMI 4
FMI 5
FMI Description:
Fault Condition:
Possible Symptoms:
Possible Cause:
· Data valid but above
normal operational range - Most severe level
· Sensor indicates a
invalid value
· Engine derate
· Poor cooling · Extreme running conditions
· Data erratic,
intermittent or incorrect
· The Intake
Manifold Temperature sensor output is too high or too low
· Engine derate · MIL illuminated
· Poor cooling · Extreme running conditions · Engine Intake Manifold sensor · Faulty harness · Faulty harness connector · Ambient Air Temperature sensor
· Voltage below
normal, or shorted to low source
· N/A
· Difficult to start in
cold climates
· Minor cold engine
smoke
· Engine derate · MIL illuminated
· Engine Intake Manifold sensor · Faulty harness · Faulty harness connector
· Current below
normal or open circuitt
· Possible short to
sensor
· Difficult to start in
cold climates
· Engine derate · MIL illuminated
· Engine Intake Manifold sensor · Faulty harness · Faulty harness connector
19
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
FMI 13 FMI 17
· Out of Calibration
· The sensor output
is showing a constant value
· Engine derate · Minor cold engine
smoke
· MIL illuminated
· Engine Intake Manifold sensor · Faulty harness · Faulty harness connector
· Data valid but below
normal operating range - Least severe level
· The sensor output
is showing a constant value
· Engine derate · Minor cold engine
smoke
· MIL illuminated
· Engine Intake Manifold sensor · Faulty harness · Faulty harness connector
ECM SPN 108, Barometric Pressure MID 128 PID 108
Type of fault:
FMI 2
FMI Description:
· Data erratic,
intermittent or incorrect
FMI 3 FMI 4
· Voltage above
normal, or shorted to high source
· Voltage below
normal, or shorted to low source
Fault Condition:
Possible Symptoms:
· Barometric
Pressure sensor output is too high or too low
· Minor engine
derate
· MIL illuminated
· · Short to battery on MIL illuminated
the metering side
· A short to ground
on the metering side
· MIL illuminated
Possible Cause:
· Faulty Sensor · Faulty Engine Control Module
· Internal fault in the Engine Control
Module
· Faulty Sensor · Internal fault in the Engine Control
Module
· Faulty Sensor
ECM SPN 110, Engine Coolant Temperature MID 128 PID 110
Type of fault: FMI 0
FMI 2
FMI 4
FMI 5
FMI Description:
Fault Condition:
Possible Symptoms:
Possible Cause:
· Data valid but above
normal operational range - Most severe level
· Coolant
temperature indicates critical limit
· Engine derate · Red engine
shutdown lamp
illuminated
· Extreme driving condition · Faulty coolant thermostat · Malfunctioning fan · Blocked radiator
· Data erratic,
intermittent or incorrect
· Engine Coolant
Temperature sensor output is too high or too low
· May affect
driveability in extreme cases
· MIL illuminated
· Faulty Sensor · Faulty harness · Faulty coolant thermostat
· Voltage below
normal or shorted low
· Engine Coolant
Temperature sensor voltage too low
· Difficult to start in
cold climates
· Idle run regulation
is deteriorated
· MIL illuminated
· Faulty Sensor · Faulty harness
· Current below
normal or open circuit
· N/A
· Difficult to start in
cold climates
· Idle run regulation
is deteriorated
· MIL illuminated
· Faulty Sensor · Faulty harness
20
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
FMI 10 FMI 13 FMI 16 FMI 17
· Abnormal rate of
change
· Engine Coolant
Temperature sensor output is showing a constant value
· May affect vehicle
driveability
· MIL illuminated
· Faulty Sensor · Faulty harness
· Out of Calibration
· Sensor out of
range
· Sensor indicates a
invalid value
· MIL illuminated
· Faulty Sensor
· Data valid but above
normal operating range - Moderately severe level
· Coolant
temperature indicates moderate upper limit
· Engine derate · Yellow electronic
malfunction lamp
illuminated
· Extreme driving condition · Faulty coolant thermostat · Malfunctioning fan · Blocked radiator
· Data valid but below
normal operating range - Least severe level
· Sensor out of
range
· Sensor indicates a
invalid value
· MIL illuminated
· Faulty Sensor
ECM SPN 111, Engine Coolant Level MID 128 PID 111
Type of fault: FMI 1
FMI 3
FMI 4
FMI 5
FMI Description:
Fault Condition:
· Data valid but below
normal operational range - Most severe level
· Critically below
range
· Coolant level can
not be detected
· Voltage above
normal, or shorted to high source
· Short Circuit +,
measuring line
· Coolant level can
not be detected
· Voltage below
normal, or shorted to low source
· Short Circuit -,
measuring line
· Coolant level can
not be detected
· Current below
normal or open circuit
· Open Circuit · Coolant level can
not be detected
Possible Symptoms:
· Engine derate · Red engine
shutdown lamp illuminated
· Coolant level can
not be detected
· Coolant level can
not be detected
· Yellow electronic
malfunction lamp illuminated
· Coolant level can
not be detected
· Yellow electronic
malfunction lamp illuminated
· Coolant level can
not be detected
· Yellow electronic
malfunction lamp illuminated
Possible Cause:
· Coolant level below range · Faulty harness
· Faulty harness · Faulty harness connector · Faulty level sensor
· Faulty harness · Faulty harness connector · Faulty level sensor
· Faulty harness · Faulty harness connector · Faulty level sensor
21
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
FMI 14 FMI 18
· Special instructions
· Sensor out of
range
· Sensor indicates a
invalid value
· Coolant level can
not be detected
· Yellow electronic
malfunction lamp
illuminated
· Data valid but below
normal operating range - Moderately severe level
· Sensor out of
range
· Sensor indicates a
invalid value
· Coolant level can
not be detected
· Yellow electronic
malfunction lamp
illuminated
· Faulty harness · Faulty harness connector · Faulty level sensor
· Faulty harness · Faulty harness connector · Faulty level sensor
ECM SPN 153, Engine High Resolution Crankcase Pressure MID 128 PID 153/PSID 23
Type of fault: FMI 0
FMI 2 FMI 3 FMI 5
FMI 7 FMI 13
FMI Description:
Fault Condition:
Possible Symptoms:
Possible Cause:
· Data valid but above
normal operational range - Most severe level
· Out of range, max
voltage, illegal
· Critically Above
Range
· Red engine
shutdown lamp
illuminated
· Forced idle · Engine shut down
· Piston ring blow-by
· Data erratic,
intermittent or incorrect
· Crankcase
pressure indication to high or to low a value
· MIL illuminated
· Faulty Crank Case Pressure senor · Faulty harness
· Voltage above
normal or shorted to high source
· Short Circuit +,
Measuring line
· Open Circuit,
Ground line
· MIL illuminated · Yellow electronic
malfunction lamp
illuminated
· Faulty Crank Case Pressure senor · Faulty harness
· Current below
normal or open circuit
· Open Circuit +, 5V
Supply Line
· Short Circuit -,
measuring line
· Open Circuit,
measuring line
· MIL illuminated · Yellow electronic
malfunction lamp
illuminated
· Faulty Crank Case Pressure senor · Faulty harness
· Mechanical system
not responding or out of adjustment
· Leakage detected
in the crankcase ventilation system
· MIL illuminated
· Faulty separator, hoses or pipes
· Out of Calibration
· Sensor out of
range
· Sensor indicates a
invalid value
· MIL illuminated
· Faulty Sensor
22
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
FMI 15 FMI 17
· Data valid but above
normal operating range - Least severe level
· Sensor out of
range
· Sensor indicates a
invalid value
· MIL illuminated
· Data valid but below
normal operating range - Least severe level
· Sensor out of
range
· Sensor indicates a
invalid value
· MIL illuminated
· Faulty Sensor · Faulty Sensor
ECM SPN 158, Keyswitch Battery Potential MID 128 PID 158/PSID 124
Type of fault:
FMI 0
FMI Description:
Fault Condition:
· · Data valid but above Engine Control
normal operational
Module battery
range
voltage too high
FMI 1
· · Data valid but below Engine Control
normal operational
Module battery
range
voltage too low
FMI 3
· Voltage above
normal, or shorted to high source
· Engine Control
Module battery voltage too high
FMI 4
· Voltage below
normal, or shorted to low source
· Engine Control
Module battery voltage too low
FMI 16 FMI 18
· Data valid but above
normal operating range - Moderately severe level
· Engine Control
Module battery voltage too high
· Data valid but below
normal operating range - Moderately severe level
· Engine Control
Module battery voltage too low
Possible Symptoms:
· N/A
· Starter will not
crank
· N/A
· Starter will not
crank
· N/A
· Starter will not
crank
Possible Cause:
· Charging system fault · External charger · Engine control module (ECM)
· Charging system fault · Battery · Ground connection
· Charging system fault · External charger · Engine control module (ECM)
· Charging system fault · Battery · Ground connection
· Charging system fault · External charger · Engine control module (ECM)
· Charging system fault · Battery · Ground connection
ECM SPN 171, Ambient Air Temperature MID 128 PID 171
Type of fault:
FMI 2
FMI Description:
· Data erratic,
intermittent or incorrect
Fault Condition:
Possible Symptoms:
· Key ON, Ambient
Air Temperature message missing on SAE J1939 and SAE J1587 data links
· N/A
Possible Cause:
· Faulty instrument cluster · Faulty harness
23
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
FMI 9 FMI 10 FMI 12
FMI 13
FMI 14 FMI 19
· Abnormal Update
Rate
· Abnormal rate of
change
· Bad intelligent
device or component
· Out of calibration
· Special instructions · Received network
data in error
· Key ON, Ambient
Air Temperature message missing on SAE J1587 data link
· N/A
· Ambient
Temperature sensor signal fault
· MIL illuminated
(13L engine only)
· Loss of SAE
J1939 data link communication between Engine Control Module and Instrument Cluster Control Module
· MIL illuminated
(13L engine only)
· Ambient
Temperature sensor signal fault
· No ambient
temperature calculated by Vehicle ECU
· No valid ambient
temperature received by Engine Control Module
· MIL illuminated
(13L engine only)
· Ambient
Temperature sensor signal fault
· MIL illuminated
· Ambient
Temperature sensor signal fault
· MIL illuminated
(13L engine only)
· Faulty instrument cluster · Faulty harness · Faulty instrument cluster · Faulty instrument cluster · Faulty harness
· Faulty instrument cluster/harness or
cluster harness connectors
· Ambient Temperature sensor signal
missing from Vehicle ECU
· Faulty instrument cluster
ECM SPN 173, Engine Exhaust Gas Temperature (EGT) MID 128 PID 173
Type of fault:
FMI 0
FMI Description:
Fault Condition:
· Data valid but above
normal operational range - Most severe level
· Exhaust Gas
Temperature is critically high
FMI 2
· Data erratic,
intermittent or incorrect
· Sensor is not
rational
Possible Symptoms:
· Engine derate · Poor driveability · Regeneration is
not possible
· MIL illuminated · Regeneration is
not possible
Possible Cause:
· Faulty harness · Faulty harness connector · Intake air leak
· Faulty harness · Faulty harness connector · Exhaust leak · Intake air leak · Sensor failure
24
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
FMI 4 FMI 5
· Voltage below
normal, or shorted to low source
· Current below
normal or open circuit
· Short to ground on
the metering side of the circuit
· MIL illuminated · Regeneration is
not possible
· Short to battery on
the metering side of the circuit
· Open in the
metering side of the circuit
· Open in the
ground side of the circuit
· MIL illuminated
· Sensor failure · Faulty harness · Faulty harness connector · Aftertreatment control module (ACM)
· Faulty harness · Sensor failure · Faulty harness connector
FMI 15 FMI 16
· Data valid but above
normal operating range - Least severe level
· Sensor out of
range
· Sensor indicates a
invalid value
· MIL illuminated
· Data valid but above
normal operating range - Moderately severe level
· Exhaust Gas
Temperature is moderately too high
· Engine derate · Poor driveability
· Sensor failure · Faulty harness
· Faulty harness · Faulty harness connector · Intake air leak
ECM SPN 175, Engine Oil Temperature 1 MID 128 PID 175
Type of fault: FMI 0
FMI 2
FMI 4
FMI Description:
Fault Condition:
Possible Symptoms:
· Data valid but above
normal operational range - Most severe level
· Extreme driving
conditions
· Engine oil
temperature critically above range
· Red engine
shutdown lamp illuminated
· Engine derate
· Data erratic,
intermittent or incorrect
· Engine oil
temperature sensor indicating too high or too low a value (abnormal value)
· MIL illuminated
(13L engine only)
· In some cases
may have an effect on driveability
· Voltage below
normal, or shorted to low source
· Short circuit -,
measuring line
· MIL illuminated
(13L engine only)
· Yellow electronic
malfunction lamp
illuminated
Possible Cause:
· Extreme driving conditions · Engine cooling fan · Oil thermostat · Coolant system · Clogged oil cooler · Engine Oil Temperature (EOT) sensor
failure
· Faulty harness
· Engine Oil Temperature (EOT) sensor
failure
· Faulty harness
25
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
FMI 5 FMI 13 FMI 16 FMI 17
· Current below
normal or open circuit
· Short circuit +,
measuring line
· Open circuit
· MIL illuminated
(13L engine only)
· Yellow electronic
malfunction lamp
illuminated
· Out of Calibration
· Sensor out of
range
· Sensor indicates a
invalid value
· MIL illuminated
· Data valid but above
normal operating range - Moderately severe level
· Extreme driving
conditions
· Engine oil
temperature is moderately too high
· Yellow electronic
malfunction lamp illuminated
· Engine derate
· Data valid but below
normal operating range - Least severe level
· Sensor out of
range
· Sensor indicates a
invalid value
· MIL illuminated
· Engine Oil Temperature (EOT) sensor
failure
· Faulty harness
· Engine Oil Temperature (EOT) sensor
failure
· Extreme driving conditions · Engine cooling fan · Oil thermostat · Coolant system · Clogged oil cooler · Engine Oil Temperature (EOT) sensor
failure
ECM SPN 177, Transmission Oil Temperature MID 128 PID 177
Type of fault: FMI 0
FMI 16
FMI Description:
Fault Condition:
· Data valid but above
normal operational range - Most severe level
· Oil temperature
critically above range
· Data valid but above
normal operating range - Moderately severe level
· Oil temperature
is moderately too high
Possible Symptoms:
· Red engine
shutdown lamp illuminated
· Yellow electronic
malfunction lamp illuminated
Possible Cause:
· Transmission oil cooler · Coolant system
· Extreme driving conditions · Engine cooling fan · Oil thermostat · Coolant system · Clogged oil cooler
ECM SPN 188, Engine Speed At Idle, Point 1 (Engine Configurations) MID 128 PID 188
Type of fault:
FMI 0
FMI Description:
Fault Condition:
· Data valid but above
normal operational range - Most severe level
· Engine idle speed
above desired speed
Possible Symptoms:
· MIL illuminated · High engine oil
consumption
· High fuel
consumption
Possible Cause:
· Engine oil entering cylinders · Leaking or faulty fuel injector
26
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
FMI 1
· Data valid but below
normal operational range - Most severe level
· Engine idle speed
below desired speed
· MIL illuminated · High fuel
consumption
· Low engine torque production · Faulty fuel injector · Low cylinder compression · Engine friction is too high
ECM SPN 190, Engine Speed MID 128 PID 190
Type of fault:
FMI 0
FMI Description:
Fault Condition:
· Data valid but above
normal operational range - Most severe level
· Engine is/was
overspeeding
Possible Symptoms:
· Red engine
shutdown lamp illuminated
Possible Cause:
· Engine oil entering cylinders · Faulty crankcase oil filter · Possible engine brake engaged
causing engine overspeeding
· Possible transmission downshift
causing engine overspeeding
ECM SPN 228, Speed Sensor Calibration MID 128 PID 228
Type of fault:
FMI 9
FMI Description:
· Abnormal update
rate
FMI 11
· Failure mode not
identifiable
Fault Condition:
· SAE J1587 data
link calibration factor message does not exist. (VECU error).
· SAE J1587 data
link calibration factor message does not exist. (VECU error).
Possible Symptoms:
· Wrong trip data
· Wrong trip data
Possible Cause:
· Vehicle ECU
· Vehicle ECU
ECM SPN 237, Vehicle Identification Number MID 128 PSID 161/162
Type of fault:
FMI 2
FMI Description:
· Data erratic,
intermittent or incorrect
FMI 12
· Bad intelligent
device or component
Fault Condition:
· No answer from
VIN
· Bad answer from
VIN
Possible Symptoms:
· Yellow electronic
malfunction lamp illuminated
· Engine will not
start
· Yellow electronic
malfunction lamp illuminated
· Engine will not
start
Possible Cause:
· Data link error · ECM · Missing VIN in other ECM's (commonly
VECU, LCM)
· ECM · Mismatched VIN sent from other
ECM's (commonly VECU, LCM)
27
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
ECM SPN 245, Total Vehicle Distance MID 128 PID 245
Type of fault:
FMI 9
FMI Description:
· Abnormal update
rate
Fault Condition:
Possible Symptoms:
· SAE J1587 data
link total vehicle distance message does not exist. (VECU error).
· N/A
Possible Cause:
· Vehicle ECU
ECM SPN 251, Time MID 128 PID 251
Type of fault:
FMI 2
FMI Description:
· Data erratic,
intermittent or incorrect
FMI 9
· Abnormal update
rate
Fault Condition:
Possible Symptoms:
· Time data
message missing on SAE J1587 and J1939 data links. (Cluster error).
· Time stamp
from cluster isn't available.
· N/A
· Time data
message didn't arrive when expected. (Cluster error).
· Time stamp
from cluster isn't available.
· N/A
Possible Cause:
· Instrument Cluster
· Instrument Cluster
FMI 10
FMI 12 FMI 13 FMI 19
· Abnormal rate of
change
· Bad intelligent
device or component
· Out of calibration
· Received network
data in error
· Soak time too
long.
· Time data fault,
data deemed
inaccurate.
· MIL illuminated · Engine makes
warm start but
cold start needed.
· Instrument Cluster
· Time and date
data missing on J1939 data link.
· MIL illuminated
· Instrument Cluster · Faulty harness · Faulty harness connector
· Time/date fault
· MIL illuminated
(13L engine only)
· Instrument Cluster · Faulty harness · Faulty harness connector
· Soaktime too long. · Time data fault,
data deemed
inaccurate.
· MIL illuminated
(13L engine only)
· Instrument Cluster
28
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
ECM SPN 252, Date MID 128 PID 252
Type of fault:
FMI 9
FMI Description:
· Abnormal update
rate
Fault Condition:
· Time stamp
from cluster isn't available.
· Date data
message missing on SAE J1587 data link. (Cluster error).
Possible Symptoms:
· N/A
Possible Cause:
· Instrument Cluster
ECM SPN 411, Engine Exhaust Gas Recirculation Differential Pressure MID 128 PID 411
Type of fault: FMI 0
FMI 1
FMI 2 FMI 3
FMI Description:
Fault Condition:
Possible Symptoms:
· Data valid but above
normal operational range - Most severe level
· Exhaust Gas
Recirculation (EGR) differential pressure sensor output reading too high. (abnormal value)
· MIL illuminated · Engine derate
· Data valid but below
normal operational range - Most severe level
· Exhaust Gas
Recirculation (EGR) differential pressure sensor output reading too low. (abnormal value)
· MIL illuminated
· Data erratic,
intermittent or incorrect
· Only used to
· N/A
control EGR valve.
· Voltage above
normal or shorted to high source
· Short to battery in
metering line
· Open in the
ground circuit
· MIL illuminated · Engine derate
Possible Cause:
· Faulty harness · Faulty harness connector · Faulty sensor · EGR leakage · Clogged EGR cooler
· Faulty harness · Faulty harness connector · Faulty sensor · Clogged venturi
· N/A
· Faulty EGR differential pressure
sensor connector
· Faulty EGR differential pressure
sensor harness
· Faulty EGR differential pressure
sensor
29
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
FMI 5 FMI 7
· Current below
normal or open circuit
· Mechanical system
not responding or out of adjustment
· Open in the 5 volt
supply line
· Short to ground in
metering line
· Open in the
metering line
· EGR differential
pressure sensor is read either to high or too low. (Abnormal value).
· MIL illuminated · Engine derate
· MIL illuminated · Engine derate
· Faulty EGR differential pressure
sensor connector
· Faulty EGR differential pressure
sensor harness
· Faulty EGR differential pressure
sensor
· Faulty EGR differential pressure
sensor connector
· Faulty EGR differential pressure
sensor harness
· Faulty EGR differential pressure
sensor
· EGR valve · EGR valve leak · Clogged venturi
ECM SPN 412, Engine Exhaust Gas Recirculation Temperature MID 128 PID 412
Type of fault: FMI 0
FMI 2
FMI 4
FMI 5
FMI Description:
Fault Condition:
Possible Symptoms:
· Data valid but above
normal operational range - Most severe level
· Engine Exhaust
Gas Recirculation Temperature is above range
· Engine derate
· Data erratic,
intermittent or incorrect
· EGR temperate
signal, believed to be not valid (plausibility fault)
· MIL illuminated · Engine derate
· Voltage below
normal, or shorted to low source
· Short to ground
on the metering side of the EGR Sensor circuit
· MIL illuminated · Engine power
will be derated
according to the
error torque map
· Current below
normal or open circuit
· Short to battery
in the metering side of the EGR Sensor circuit
· Open in the
metering side of the EGR Sensor circuit
· Open circuit in
the ground line of the EGR Sensor circuit
· MIL illuminated · Engine derate
Possible Cause:
· Extreme driving conditions · EGR cooler failure
· Faulty sensor
· Faulty EGR Temperature Sensor
connector
· Faulty EGR Temperature Sensor
harness
· Faulty EGR Temperature Sensor · Faulty EGR Temperature Sensor
connector
· Faulty EGR Temperature Sensor
harness
· Faulty EGR Temperature Sensor
30
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
FMI 13 FMI 13 ) FMI 15 FMI 16 FMI 17
· Out of calibration
· Engine Exhaust
Gas Recirculation Temperature sensor is out of range (low)
· Sensor indicates
a invalid value
· MIL illuminated
· Out of calibration
· Engine Exhaust
Gas Recirculation Temperature sensor is above range
· Engine derate
· Data valid but above
normal operating range - Least severe level
· Engine Exhaust
Gas Recirculation Temperature sensor is out of range (high)
· Sensor indicates
a invalid value
· MIL illuminated
· Data valid but above
normal operating range - Moderately severe level
· Engine Exhaust
Gas Recirculation Temperature is above range
· Engine derate
· Data valid but below
normal operating range - Least severe level
· Engine Exhaust
Gas Recirculation Temperature is out of range (low)
· Sensor indicates
a invalid value
· MIL illuminated
· Faulty EGR Temperature Sensor
connector
· Faulty EGR Temperature Sensor
harness
· Faulty EGR Temperature Sensor
· Extreme driving conditions · EGR cooler failure
· Faulty EGR Temperature Sensor
connector
· Faulty EGR Temperature Sensor
harness
· Faulty EGR Temperature Sensor
· Extreme driving conditions · EGR cooler failure
· Faulty EGR Temperature Sensor
connector
· Faulty EGR Temperature Sensor
harness
· Faulty EGR Temperature Sensor
ECM SPN 558, Accelerator Pedal 1 Idle Validation Switch MID 128 SID 230
Type of fault:
FMI 3
FMI Description:
· Voltage above
normal, or shorted to high source
FMI 5
· Current below
normal or open circuit
Fault Condition:
· Idle Validation
Switch (IVS) signal shorted to voltage
· Idle Validation
Switch (IVS) signal shorted to ground or open
Possible Symptoms:
· Yellow electronic
malfunction lamp illuminated
· Yellow electronic
malfunction lamp illuminated
Possible Cause:
· Faulty harness or connector
· Faulty harness or connector
31
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
ECM SPN 626, Intake Air Heater (IAH) Relay MID 128 PID 45
Type of fault:
FMI 3
FMI Description:
· Voltage above
normal, or shorted to high source
Fault Condition:
· Short Circuit +,
Measuring line
FMI 4
· Voltage below
normal, or shorted to low source
· Short Circuit -,
Measuring line
FMI 5
· Current below
normal or open circuit
· Open Circuit
Possible Symptoms:
Possible Cause:
· Preheat relay not
activated
· White smoke for
cold start
· Start problems in
cold climate
· Preheat relay solenoid shorted
· Red engine
shutdown lamp illuminated (13L engine CXU, CHU and GU only)
· Yellow electronic
malfunction lamp illuminated
· Induction air is hot · Preheat relay is
impossible to turn off
· Faulty harness
· Preheat relay not
activated
· White smoke for
cold start
· Start problems in
cold climate
· Faulty Preheat relay · Faulty harness
ECM SPN 628, Program Memory MID 128 SID 240
Type of fault:
FMI 2
FMI Description:
· Data erratic,
intermittent or incorrect
Fault Condition:
· Check sum error
Possible Symptoms:
· Red engine
shutdown lamp illuminated
· Engine will not
start
Possible Cause:
· Engine Control Module (ECM)
software
FMI 11
· Root cause not
known
· Bad software
configuration
· MIL illuminated · Engine will not
start
· Engine Control Module (ECM)
software
32
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
FMI 12 FMI 14
· Bad intelligent
device or component
· Special instructions
· Error on code-part
of flash RAM or erased vendor area
· Red engine
shutdown lamp illuminated
· Nothing functions
· VIN not loaded yet
· Flashing MIL · Engine will not
start
· Engine Control Module (ECM)
software
· Engine Control Module (ECM)
· VIN missing
ECM SPN 629, Electronic Control Unit (ECU) 1 MID 128 SID 254
Type of fault:
FMI 8
FMI Description:
Fault Condition:
· Abnormal frequency
or pulse width or period
· Self test failure
Possible Symptoms:
· Red engine
shutdown lamp illuminated
· Not possible to
program Engine Control Module (ECM)
Possible Cause:
· Engine Control Module (ECM)
FMI 12
· Bad intelligent
device or component
· Self test failure
· Red engine
shutdown lamp
illuminated
· Engine will not
start
· Engine Control Module (ECM)
ECM SPN 630, Calibration Memory MID 128 SID 253
Type of fault:
FMI 2
FMI Description:
· Data erratic,
intermittent or incorrect
Fault Condition:
· Check sum error
Possible Symptoms:
· Red engine
shutdown lamp illuminated
· Engine will not
start
Possible Cause:
· Engine Control Module (ECM)
software
33
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
FMI 12 FMI 14
· Bad intelligent
device or component
· Special instructions
· Check sum error
· Red engine
shutdown lamp
illuminated
· Engine will not
start
· VIN not loaded yet
· Red engine
shutdown lamp illuminated
· Loss of log data
and some user configurable data
· Engine Control Module (ECM)
· Engine Control Module (ECM)
software
ECM SPN 631, Calibration Module MID 128 PSID 77/PSID 124
Type of FMI Description: fault:
Fault Condition:
Possible Symptoms:
Possible Cause:
FMI 3 FMI 8
· Voltage above
normal, or shorted to high source
· Check sum error
· Abnormal frequency
or pulse width or period
· Reset of ECM
does not work
· Engine will not
start
· Engine will not
start
· Software error · Software error
ECM SPN 633, Engine Fuel Actuator 1 Control Command MID 128 SID 18
Type of fault:
FMI 3
FMI Description:
· Voltage above
normal, or shorted to high source
FMI 4
· Voltage below
normal, or shorted to low source
FMI 5
· Current below
normal or open circuit
Fault Condition:
· Circuit shorted + · Circuit shorted
· Open circuit
Possible Symptoms:
· Yellow electronic
malfunction lamp illuminated
· Valve constantly
shut
· Yellow electronic
malfunction lamp illuminated
· High fuel
consumption due to fuel leakage
· Yellow electronic
malfunction lamp illuminated
· Valve constantly
shut
Possible Cause:
· Faulty solenoid · Faulty harness · Faulty ECM driver
· Faulty solenoid · Faulty harness · Faulty ECM driver
· Faulty solenoid · Faulty harness
34
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
ECM SPN 636, Camshaft Position Sensor (CMP) MID 128 SID 21
Type of fault: FMI 2
FMI 3
FMI 8
FMI Description:
Fault Condition:
Possible Symptoms:
· Data erratic,
intermittent or incorrect
· Phase Error
- Incorrect correlation between CMP and crankshaft position (CKP) sensor
· MIL illuminated · Increase in fuel
consumption
· Voltage above
normal, or shorted to high source
· Missing Signal
from CMP sensor
· Open in the CMP
sensor circuit
· Short to battery in
the CMP sensor
circuit
· Short to ground in
the CMP sensor
circuit
· MIL illuminated · Possible loss of
engine power
· Increased engine
start time
· Abnormal frequency
or pulse width or period
· Noisy Signal from
CMP sensor
· Open in the CMP
sensor circuit
· MIL illuminated · Possible loss of
engine power
· Increased engine
start time
Possible Cause:
· Engine timing
· Faulty harness
· Faulty CMP sensor · Faulty harness
35
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
ECM SPN 637, Crankshaft Position Sensor (CKP) MID 128 SID 22
Type of fault: FMI 2
FMI 3
FMI 8
FMI Description:
Fault Condition:
Possible Symptoms:
· Data erratic,
intermittent or incorrect
· Intermittent or
weak signal
· MIL illuminated · Yellow electronic
malfunction lamp
illuminated
· Increased fuel
consumption
· Imprecise engine
timing
· Increased fuel
consumption
· Uneven cylinder
balancing
· Power loss · Smoke
· Voltage above
normal, or shorted to high source
· Missing Signal
CKP sensor
· Open in the CKP
sensor circuit
· Short to battery in
the CKP sensor
circuit
· Short to ground in
the CKP sensor
circuit
· MIL illuminated · Yellow electronic
malfunction lamp
illuminated
· Possible loss of
engine power
· Increased fuel
consumption
· Abnormal frequency
or pulse width or period
· Erratic or
intermittent signal
from CKP sensor
· Open in the CKP
sensor
· MIL illuminated · Yellow electronic
malfunction lamp
illuminated
· Possible loss of
engine power
· Increased engine
start time
· Increased fuel
consumption
· Uneven cylinder
balancing
· Power loss · Smoke
Possible Cause:
· Faulty CKP sensor harness · Faulty CKP sensor
· Faulty CKP sensor harness · Faulty CKP sensor
· Faulty CKP sensor harness · Faulty CKP sensor mounting
36
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
ECM SPN 639, SAE J1939 Data Link 1 MID 128 SID 231
Type of fault:
FMI 2
FMI Description:
· Data erratic,
intermittent or incorrect
Fault Condition:
Possible Symptoms:
· SAE J1939 high or
low circuit shorted +
· SAE J1939 high or
low circuit shorted
· SAE J1939 high
or low circuit open
· MIL illuminated
Possible Cause:
· Faulty harness or connector
ECM SPN 641, Engine Variable Geometry Turbocharger (VGT) Actuator 1 MID 128 SID 27
Type of fault: FMI 0
FMI 2
FMI 4
FMI Description:
Fault Condition:
Possible Symptoms:
· Data valid but above
normal operational range - Most severe level
· Engine Variable
Geometry Turbocharger (VGT) actuator temperature out of range
· Possible Red
engine shutdown lamp illuminated (dependant on severity)
· Yellow electronic
malfunction lamp illuminated
· Possible engine
derate
· Data erratic,
intermittent or incorrect
· Engine Variable
Geometry Turbocharger (VGT) actuator has not seen a valid command on CAN2 data link
· Incorrect data
· MIL illuminated · Yellow electronic
malfunction lamp
illuminated
· Low boost · Low power · Nozzle opens · Smoke from
engine
· Voltage below
normal, or shorted to low source
· Short to ground
· MIL illuminated · Yellow electronic
malfunction lamp illuminated
· Nozzle will open
resulting in low power and low boost
· VGT actuator
will continue to attempt and maintain target nozzle position
Possible Cause:
· N/A
· Disturbance on CAN2 data link
· Faulty VGT actuator connector · Faulty VGT actuator harness · Low battery voltage
37
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
FMI 7 FMI 9 FMI 13
· Mechanical system
not responding or out of adjustment
· Abnormal update
rate
· Out of calibration
· Mechanical
problem with the Engine Variable Geometry Turbocharger (VGT) actuator
· MIL illuminated · Yellow electronic
malfunction lamp
illuminated
· Low boost and
smoke
· Possible engine
derate
· Power loss in
some cases when
actuator motor
has been disabled
· VGT actuator motor effort is
temporarily limited to prevent
overheating
· Restrictions detected when running
learn sequence
· VGT actuator is slow to follow
commands
· VGT actuator position is not tracking
command
· Data from the
Engine Variable Geometry Turbocharger (VGT) actuator has been missing for 2-seconds
· MIL illuminated · Yellow electronic
malfunction lamp
illuminated
· Engine derated
(major)
· EGR valve closed
· Data link harness · No supply to VGT actuator · VGT actuator · VGT actuator connector
· Failed self-
calibration
· Yellow electronic
malfunction lamp illuminated
· VGT actuator
ECM SPN 642, Engine Variable Geometry Turbocharger (VGT) Actuator 2 MID 128 PPID 89
Type of fault
FMI 0
FMI Description:
Fault Condition:
· Data valid but above
normal operational range - Most severe level
· VGT SRA
temperature is critically high
FMI 16
· Data valid but above
normal operating range - Moderately severe level
· VGT SRA
temperature is moderately too high
Possible Symptoms:
· Red engine
shutdown lamp illuminated
· Engine derate
· Yellow electronic
malfunction lamp illuminated
· Engine derate
Possible Cause
· Coolant system malfunction · Extreme driving conditions · Overheated VGT actuator
· Coolant system malfunction · Extreme driving conditions · Overheated VGT actuator
ECM SPN 647, Engine Fan Clutch Output Device Driver MID 128 SID 33
Type of fault:
FMI 3
FMI Description:
· Voltage above
normal, or shorted to high source
38
Fault Condition:
· Short to positive
in the cooling fan control circuit
Possible Symptoms:
· Yellow electronic
malfunction lamp illuminated
· Increased fuel
consumption
· Fan runs at full
speed
Possible Cause:
· Faulty cooling fan actuator · Faulty cooling fan actuator harness or
connector
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
FMI 4 FMI 5
· Voltage below
normal, or shorted to low source
· Current below
normal or open circuit
· Short to ground
in the cooling fan control circuit
· Output voltage
is 1/3 the supply voltage
· Yellow electronic
malfunction lamp illuminated
· Fan always
deactivated or always activated if fault is intermittent
· Faulty cooling fan actuator · Faulty cooling fan actuator harness or
connector
· Open in the
cooling fan control circuit
· Increased fuel
consumption
· Fan runs at full
speed
· Faulty cooling fan actuator · Faulty cooling fan actuator harness or
connector
ECM SPN 651, Engine Injector Cylinder 1 MID 128 SID 1
Type of fault: FMI 3
FMI 5
FMI 7 FMI 8 FMI 13 FMI 31
FMI Description:
Fault Condition:
Possible Symptoms:
Possible Cause:
· Voltage above
normal, or shorted to high source
· Harness shorted +
low side circuit
· MIL illuminated · Yellow electronic
malfunction lamp
illuminated
· Engine power loss · Engine running
uneven (misfire)
· Faulty harness
· Current below
normal or open circuit
· Harness shorted
+, or open high
side circuit
· Harness shorted
low side circuit
· MIL illuminated · Yellow electronic
malfunction lamp
illuminated
· Engine power loss · Engine running
uneven (misfire)
· Faulty harness · Faulty engine fuel injector
· Mechanical system
not responding properly
· · Cylinder balancing MIL illuminated
data above limit
· PTO engaged without ECM knowing · Faulty engine fuel injector · Low cylinder compression · Damaged or flywheel
· · Abnormal frequency, Misfire detected
pulse width, or period
· MIL illuminated
· Faulty engine fuel injector (possibly
· Rough engine idle
clogged)
· Out of calibration
· · Cylinder balancing MIL illuminated
data above limit
· PTO engaged without ECM knowing · Faulty engine fuel injector · Low cylinder compression · Damaged or flywheel
· Condition exists
· Misfire detected
· MIL illuminated
· Faulty engine fuel injector (possibly
· Rough engine idle
clogged)
39
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
ECM SPN 652, Engine Injector Cylinder 2 MID 128 SID 2
Type of fault: FMI 3
FMI 5
FMI 7 FMI 8 FMI 13 FMI 31
FMI Description:
Fault Condition:
Possible Symptoms:
Possible Cause:
· Voltage above
normal, or shorted to high source
· Harness shorted +
low side circuit
· MIL illuminated · Yellow electronic
malfunction lamp
illuminated
· Engine power loss · Engine running
uneven (misfire)
· Faulty harness
· Current below
normal or open circuit
· Harness shorted
+, or open high
side circuit
· Harness shorted
low side circuit
· MIL illuminated · Yellow electronic
malfunction lamp
illuminated
· Engine power loss · Engine running
uneven (misfire)
· Faulty harness · Faulty engine fuel injector
· Mechanical system
not responding properly
· Cylinder balancing
data above limit
· MIL illuminated · Yellow electronic
malfunction lamp
illuminated
· PTO engaged without ECM knowing · Faulty engine fuel injector · Low cylinder compression · Damaged or flywheel
· · Abnormal frequency, Misfire detected
pulse width, or period
· MIL illuminated
· Faulty engine fuel injector (possibly
· Rough engine idle
clogged)
· Out of calibration
· Cylinder balancing
data above limit
· MIL illuminated · Yellow electronic
malfunction lamp
illuminated
· PTO engaged without ECM knowing · Faulty engine fuel injector · Low cylinder compression · Damaged or flywheel
· Condition exists
· Misfire detected
· MIL illuminated
· Faulty engine fuel injector (possibly
· Rough engine idle
clogged)
ECM SPN 653, Engine Injector Cylinder 3 MID 128 SID 3
Type of fault:
FMI 3
FMI Description:
· Voltage above
normal, or shorted to high source
Fault Condition:
Possible Symptoms:
Possible Cause:
· Harness shorted +
low side circuit
· MIL illuminated · Yellow electronic
malfunction lamp
illuminated
· Engine power loss · Engine running
uneven (misfire)
· Faulty harness
40
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
FMI 5
FMI 7 FMI 8 FMI 13 FMI 31
· Current below
normal or open circuit
· Harness shorted
+, or open high
side circuit
· Harness shorted
low side circuit
· MIL illuminated · Yellow electronic
malfunction lamp
illuminated
· Engine power loss · Engine running
uneven (misfire)
· Faulty harness · Faulty engine fuel injector
· Mechanical system
not responding properly
· Cylinder balancing
data above limit
· MIL illuminated · Yellow electronic
malfunction lamp
illuminated
· PTO engaged without ECM knowing · Faulty engine fuel injector · Low cylinder compression · Damaged or flywheel
· · Abnormal frequency, Misfire detected
pulse width, or period
· MIL illuminated
· Faulty engine fuel injector (possibly
· Rough engine idle
clogged)
· Out of calibration
· Cylinder balancing
data above limit
· MIL illuminated · Yellow electronic
malfunction lamp
illuminated
· PTO engaged without ECM knowing · Faulty engine fuel injector · Low cylinder compression · Damaged or flywheel
· Condition exists
· Misfire detected
· MIL illuminated
· Faulty engine fuel injector (possibly
· Rough engine idle
clogged)
ECM SPN 654, Engine Injector Cylinder 4 MID 128 SID 4
Type of fault: FMI 3
FMI 5
FMI 7
FMI Description:
· Voltage above
normal, or shorted to high source
· Current below
normal or open circuit
· Mechanical system
not responding properly
Fault Condition:
Possible Symptoms:
Possible Cause:
· Harness shorted +
low side circuit
· MIL illuminated · Yellow electronic
malfunction lamp
illuminated
· Engine power loss · Engine running
uneven (misfire)
· Faulty harness
· Harness shorted
+, or open high
side circuit
· Harness shorted
low side circuit
· MIL illuminated · Yellow electronic
malfunction lamp
illuminated
· Engine power loss · Engine running
uneven (misfire)
· Faulty harness · Faulty engine fuel injector
· Cylinder balancing
data above limit
· MIL illuminated · Yellow electronic
malfunction lamp
illuminated
· PTO engaged without ECM knowing · Faulty engine fuel injector · Low cylinder compression · Damaged or flywheel
41
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
FMI 8 FMI 13 FMI 31
· · Abnormal frequency, Misfire detected
pulse width, or period
· MIL illuminated
· Faulty engine fuel injector (possibly
· Rough engine idle
clogged)
· Out of calibration
· Cylinder balancing
data above limit
· MIL illuminated · Yellow electronic
malfunction lamp
illuminated
· PTO engaged without ECM knowing · Faulty engine fuel injector · Low cylinder compression · Damaged or flywheel
· Condition exists
· Misfire detected
· MIL illuminated
· Faulty engine fuel injector (possibly
· Rough engine idle
clogged)
ECM SPN 655, Engine Injector Cylinder 5 MID 128 SID 5
Type of fault: FMI 3
FMI 5
FMI 7 FMI 8 FMI 13 FMI 31
FMI Description:
Fault Condition:
Possible Symptoms:
Possible Cause:
· Voltage above
normal, or shorted to high source
· Harness shorted +
low side circuit
· MIL illuminated · Yellow electronic
malfunction lamp
illuminated
· Engine power loss · Engine running
uneven (misfire)
· Faulty harness
· Current below
normal or open circuit
· Harness shorted
+, or open high
side circuit
· Harness shorted
low side circuit
· MIL illuminated · Yellow electronic
malfunction lamp
illuminated
· Engine power loss · Engine running
uneven (misfire)
· Faulty harness · Faulty engine fuel injector
· Mechanical system
not responding properly
· Cylinder balancing
data above limit
· MIL illuminated · Yellow electronic
malfunction lamp
illuminated
· PTO engaged without ECM knowing · Faulty engine fuel injector · Low cylinder compression · Damaged or flywheel
· · Abnormal frequency, Misfire detected
pulse width, or period
· MIL illuminated
· Faulty engine fuel injector (possibly
· Rough engine idle
clogged)
· Out of calibration
· Cylinder balancing
data above limit
· MIL illuminated · Yellow electronic
malfunction lamp
illuminated
· PTO engaged without ECM knowing · Faulty engine fuel injector · Low cylinder compression · Damaged or flywheel
· Condition exists
· Misfire detected
· MIL illuminated
· Faulty engine fuel injector (possibly
· Rough engine idle
clogged)
42
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
ECM SPN 656, Engine Injector Cylinder 6 MID 128 SID 6
Type of fault: FMI 3
FMI 5
FMI 7 FMI 8 FMI 13 FMI 31
FMI Description:
Fault Condition:
Possible Symptoms:
Possible Cause:
· Voltage above
normal, or shorted to high source
· Harness shorted +
low side circuit
· MIL illuminated · Yellow electronic
malfunction lamp
illuminated
· Engine power loss · Engine running
uneven (misfire)
· Faulty harness
· Current below
normal or open circuit
· Harness shorted
+, or open high
side circuit
· Harness shorted
low side circuit
· MIL illuminated · Yellow electronic
malfunction lamp
illuminated
· Engine power loss · Engine running
uneven (misfire)
· Faulty harness · Faulty engine fuel injector
· Mechanical system
not responding properly
· Cylinder balancing
data above limit
· MIL illuminated · Yellow electronic
malfunction lamp
illuminated
· PTO engaged without ECM knowing · Faulty engine fuel injector · Low cylinder compression · Damaged or flywheel
· · Abnormal frequency, Misfire detected
pulse width, or period
· MIL illuminated
· Faulty engine fuel injector (possibly
· Rough engine idle
clogged)
· Out of calibration
· Cylinder balancing
data above limit
· MIL illuminated · Yellow electronic
malfunction lamp
illuminated
· PTO engaged without ECM knowing · Faulty engine fuel injector · Low cylinder compression · Damaged or flywheel
· Condition exists
· Misfire detected
· MIL illuminated
· Faulty engine fuel injector (possibly
· Rough engine idle
clogged)
ECM SPN 677, Engine Starter Motor Relay MID 128 SID 39
Type of fault:
FMI 3
FMI Description:
· Voltage above
normal, or shorted to high source
Fault Condition:
· Circuit shorted +
Possible Symptoms:
· Yellow electronic
malfunction lamp illuminated
· Engine will not
start
Possible Cause:
· Faulty starter relay · Fault harness
43
Group 28
FMI 5
· Current below
normal or open circuit
· Open circuit
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
· Yellow electronic
malfunction lamp
illuminated
· Engine will not
start
· Faulty starter relay · Fault harness
ECM SPN 729, Intake Air Heater (IAH) 1 MID 128 SID 70
Type of fault: FMI 3
FMI 4
FMI Description:
· Voltage above
normal, or shorted to high source
· Voltage below
normal, or shorted to low source
Fault Condition:
· Circuit shorted +,
measuring line
· Circuit shorted ,
measuring line
Possible Symptoms:
· Yellow electronic
malfunction lamp illuminated
· Yellow electronic
malfunction lamp illuminated
Possible Cause:
· Faulty preheat relay · Faulty intake air heater (IAH) 1
· Faulty preheat relay · Faulty intake air heater (IAH) 1
FMI 5
· Current below
normal or open circuit
· Open circuit
· Yellow electronic
malfunction lamp illuminated
· Faulty intake air heater (IAH) 1
ECM SPN 730, Intake Air Heater (IAH) 2 MID 128 SID 71
Type of fault: FMI 3
FMI 4
FMI Description:
· Voltage above
normal, or shorted to high source
· Voltage below
normal, or shorted to low source
Fault Condition:
· Circuit shorted +,
measuring line
· Circuit shorted ,
measuring line
Possible Symptoms:
· Yellow electronic
malfunction lamp illuminated
· Yellow electronic
malfunction lamp illuminated
Possible Cause:
· Faulty preheat relay · Fautly intake air heater (IAH) 2
· Faulty preheat relay · Fautly intake air heater (IAH) 2
44
Group 28
FMI 5
· Current below
normal or open circuit
· Open circuit
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
· Yellow electronic
malfunction lamp illuminated
· Fautly intake air heater (IAH) 2
ECM SPN 975, Estimated Percent Fan Speed (MID 128 PID 26)
Type of fault:
FMI 3
FMI Description:
· Voltage above
normal, or shorted to high source
Fault Condition:
· Missing signal
from Fan Speed Sensor
· Short Circuit +,
Measuring line
· Short Circuit -,
Measuring line
· Open Circuit,
Measuring line
· Open Circuit,
Ground line
Possible Symptoms:
Possible Cause:
· Higher fuel
consumption
· Will work as on/off
fan, 100%fan speed if cooling is needed
· Cooling Fan Speed (CFS) sensor
failure
· Faulty Cooling Fan Speed (CFS)
sensor harness
45
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
ECM SPN 1072, Engine Compression Brake Output #1 MID 128 PPID 122
Type of fault FMI 1
FMI 3
FMI Description:
Fault Condition:
· Data valid but below
normal operational range - Most severe level
· Below range
· Voltage above
normal, or shorted to high source
· Short Circuit +
FMI 4
· Voltage below
normal, or shorted to low source
· Short Circuit -
FMI 5
· Current below
normal or open circuit
· Open Circuit
Possible Symptoms:
· No Engine
Compression Brake
Possible Cause
· Low engine oil temperature
· Yellow electronic
malfunction lamp illuminated
· Engine
Compression Brake can not be turned on
· Engine brake
function derated
· Gear shift
performance derated for some automatic transmissions
· Faulty Engine Compression Brake
actuator
· Faulty harness
· Yellow electronic
malfunction lamp
illuminated
· Compression
brake can not
be turned off
· Engine stops
running
· Engine impossible
to restart
· Faulty Engine Compression Brake
actuator
· Faulty harness
· Yellow electronic
malfunction lamp illuminated
· Compression rake
can not be turned on
· Engine brake
function derated
· Gear shift
performance derated for some automatic transmission boxes
· Faulty Engine Compression Brake
actuator
· Faulty harness
46
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
ECM SPN 1127, Engine Turbocharger Intake Manifold Pressure (IMP) MID 128 PSID 98
Type of fault: FMI 0 FMI 1
FMI 10 FMI 11 FMI 13
FMI 14 FMI 16 FMI 18
FMI Description:
Fault Condition:
Possible Symptoms:
· Data valid but above
normal operational range
· Engine
Turbocharger boost pressure is too high
· MIL illuminated
(13L engine only)
· Turbocharger
surge
· Data valid but below
normal operational range
· Engine
Turbocharger boost pressure is too low
· MIL illuminated
(13L engine only)
· Engine derate · Engine slow to
respond
· Abnormal rate of
change
· Poor Engine
Turbocharger boost pressure response
· MIL illuminated · Engine power
loss/re-
sponse/drivability
· Root cause not
known
· · Variable Geometry MIL illuminated
Turbocharger control mode fault
· Out of calibration
· Variable Geometry
Turbocharger control mode adjustment exceeded
· Engine power
loss/response/drivability
· Special instructions
· Poor Engine
Turbocharger boost pressure response
· Data valid but above
normal operating range - Moderately severe level
· Engine
Turbocharger boost pressure is too high
· Data valid but below
normal operating range - Moderately severe level
· Engine
Turbocharger boost pressure is too low
· MIL illuminated
· MIL illuminated
(13L engine only)
· Turbocharger
surge
· MIL illuminated
(13L engine only)
· Engine derate · Engine slow to
respond
Possible Cause:
· EGR system failure · Faulty Turbocharger oulet pressure
sensor
· Air leak in turbocharger hoses, pipes,
brackets, cooler or components
· EGR system fault
· Turbocharger inlet air system leak · Faulty Turbocharger
· Variable Geometry Turbocharger fault
· Air leak in turbocharger hoses, pipes,
brackets, cooler or components
· EGR system fault · Faulty Turbocharger oulet pressure
sensor
· Exhaust back pressure too high · Air leak in turbocharger hoses, pipes,
brackets, cooler or components
· Variable Geometry Turbocharger fault · Oil pressure fault · EGR system failure · Faulty sensor
· Air leak in turbocharger hoses, pipes,
brackets, cooler or components
· EGR system failure
47
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
ECM SPN 1136, Engine Control Module (ECM) Temperature MID 128 PPID 55
Type of fault FMI 4
FMI 5
FMI Description:
· Voltage below
normal, or shorted to low source
· Current below
normal or open circuit
Fault Condition:
Possible Symptoms:
· Short to ground
on the metering circuit
· N/A
· Short to battery
in the metering
circuit
· Open in the
metering circuit
· Open circuit in the
ground circuit
· N/A
Possible Cause
· Engine Control Module (ECM) · Engine Control Module (ECM)
ECM SPN 1198, Antitheft Random Number MID 128 PID 224
Type of fault:
FMI 2
FMI Description:
· Data erratic,
intermittent or incorrect
FMI 12
· Bad intelligent
device or component
Fault Condition:
Possible Symptoms:
· Engine Control
Module and Instrument Control Module security codes do not match
· Yellow electronic
malfunction lamp illuminated
· Can start engine
· Security system
not installed
· Yellow electronic
malfunction lamp illuminated
· Can start engine
Possible Cause:
· Security system failure
· Security system failure
48
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
ECM SPN 1231, SAE J1939 Data Link 2 MID 128 PSID 229/232
Type of fault:
FMI 2
FMI Description:
· Data erratic,
intermittent or incorrect
FMI 9
· Abnormal update
rate
Fault Condition:
Possible Symptoms:
Possible Cause:
· Circuit shorted + · Circuit shorted · Open circuit
· MIL illuminated · Engine power loss · No Aftertreatment
Diesel Exhaust
Fluid (DEF)
dosing
· No variable
geometry engine
turbocharger
control
· Faulty harness
· Missing signal
from Transmission Control Module (TCM)
· MIL illuminated · Yellow electronic
malfunction lamp illuminated
· No Aftertreatment
Diesel Exhaust Fluid (DEF) dosing
· SAE J1939 data link · Faulty harness or connectors · DEF pump · Aftertreatment Diesel Exhaust Fluid
(DEF) control module
ECM SPN 1265, Engine Piston Cooling Oil Pressure Actuator MID 128 SID 85
Type of fault:
FMI 3
FMI Description:
· Voltage above
normal, or shorted to high source
FMI 4
· Voltage below
normal, or shorted to low source
Fault Condition:
· Circuit shorted +
· Circuit shorted
Possible Symptoms:
· Yellow electronic
malfunction lamp illuminated
· Possible smoke
during start up
· Red engine
shutdown lamp illuminated
· Engine damage
can occur without piston cooling
Possible Cause:
· Faulty harness · Faulty actuator
· Faulty harness · Faulty actuator
FMI 5
· Current below
normal or open circuit
· Open circuit
· Yellow electronic
malfunction lamp
illuminated
· Possible smoke
during start up
· Faulty harness · Faulty actuator
49
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
ECM SPN 1322, Engine Misfire for Multiple Cylinders MID 128 PSID 27
Type of fault: FMI 8
FMI 31
FMI Description:
Fault Condition:
· Abnormal frequency
or pulse width or period
· Cylinder misfires
detected in multiple cylinders
· Condition exists
· Cylinder misfires
detected in multiple cylinders
Possible Symptoms:
· MIL illuminated · Rough idle
· MIL illuminated · Rough idle
Possible Cause:
· Engine fuel injectors · Engine fuel injectors
ECM SPN 1659, Engine Coolant System Thermostat MID 128 PSID 109
Type of fault:
FMI 7
FMI Description:
· Mechanical system
not responding or out of adjustment
Fault Condition:
· Thermostat stuck
closed
Possible Symptoms:
· Possible poor
drivability
Possible Cause:
· Coolant thermostat
FMI 12
· Bad intelligent
device or component
· Thermostat is
leaking or stuck open
· MIL illuminated · Longer engine
warm up time
· Poor heat in cab
· Coolant thermostat
ECM SPN 1675, Engine Starter Mode MID 128 SID 39
Type of fault: FMI 0
FMI 7
FMI 10
FMI 14
FMI Description:
Fault Condition:
· Data valid but above
normal operational range - Most severe level
· Starter
overheating
· Mechanical system
not responding or out of adjustment
· Transmission not
in neutral
· Abnormal rate of
change
· Starter gear is
stuck, engaged with engine
· · Special instructions
PTO is engaged
or switch on
Possible Symptoms:
· Engine will not
start
· Engine will not
start
· Engine will not
start
· Engine will not
start
Possible Cause:
· Starter is deactivated due to
overheating
· Starter is deactivated due to
overheating
· Starter is deactivated due to
overheating
· Starter is deactivated due to
overheating
50
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
ECM SPN 1677, Aftertreatment DPF Auxiliary Heater Mode MID 128 PSID 25
Type of fault:
FMI 0
FMI Description:
Fault Condition:
· Data valid but above
normal operational range -- most severe level
· Truck has idled
too long without completing a periodic heat mode
FMI 7
· Mechanical system
not responding or out of adjustment
· Truck has idled
too long without completing a periodic heat mode
FMI 16
· Data valid but above
normal operating range - Moderately severe level
· Truck has idled
too long without completing a periodic heat mode
Possible Symptoms:
· Red engine
shutdown lamp illuminated
· Engine derate · High temperature
spikes in DPF when driving is resumed or during stationary regeneration
· Yellow electronic
malfunction lamp illuminated
· White exhaust
smoke
· High temperature
spikes in DPF when driving is resumed or during stationary regeneration
· Yellow electronic
malfunction lamp illuminated
· White exhaust
smoke
· High temperature
spikes in DPF when driving is resumed or during stationary regeneration
Possible Cause:
· Extremely cold ambient temperatures · PTO operated with limited exhaust
temperatures
· Engine turbocharger · Engine turbocharger compressor
bypass valve
· Extremely cold ambient temperatures · PTO operated with limited exhaust
temperatures
· Engine turbocharger · Engine turbocharger compressor
bypass valve
· Extremely cold ambient temperatures · PTO operated with limited exhaust
temperatures
· Engine turbocharger · Engine turbocharger compressor
bypass valve
ECM SPN 1761, Aftertreatment Diesel Exhaust Fluid (DEF) Tank Level PPID 278
Type of fault: FMI 3
FMI 5
FMI Description:
· Voltage above
normal, or shorted to high source
· Current below
normal or open circuit
Fault Condition:
· Short circuit high
side
· Short circuit + · Open circuit
Possible Symptoms:
· N/A
Possible Cause:
· DEF tank pickup assembly/sensor
failure
· Yellow electronic
malfunction lamp illuminated
· DEF tank pickup assembly/sensor
failure
51
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
FMI 11 FMI 14
FMI 18
· Root cause not
known
· Special Instructions
· Data valid but below
normal operating range - Moderately severe level
· DEF tank level low
(driver warning)
· DEF tank almost
empty (driver warning)
· DEF tank almost
empty (driver warning)
· Low DEF fluid
lamp illuminated
· Low DEF fluid
lamp illuminated
· No Aftertreatment
Diesel Exhaust Fluid (DEF) dosing
· Low DEF fluid
lamp illuminated
· No Aftertreatment
Diesel Exhaust Fluid (DEF) dosing
· N/A · N/A
· N/A
ECM SPN 2003, Transmission Control Module (TCM) Status MID 128 PSID 205
Type of fault:
FMI 9
FMI Description:
· Abnormal update
rate
Fault Condition:
Possible Symptoms:
· Missing signal
from Transmission Control Module (TCM)
· N/A
Possible Cause:
· Data link error
ECM SPN 2017, Cruise Control Status MID 128 PID 85
Type of fault:
FMI 9
FMI Description:
· Abnormal update
rate
Fault Condition:
· Missing (Cruise
Control) signal from VECU
Possible Symptoms:
· Cruise Control
does not work
Possible Cause:
· No clutch information to Engine Control
Module (ECM) from SAE J1939 data link
ECM SPN 2029, Invalid or Missing Data from Vehicle ECU MID 128 PSID 201
Type of fault:
FMI 8
FMI Description:
Fault Condition:
· Abnormal frequency
or pulse width or period
· No contact with
VECU
FMI 9 52
· Abnormal update
rate
· Missing signal
from cluster
Possible Symptoms:
· Yellow electronic
malfunction lamp illuminated
· PTO, engine
compression brake and cruise control do not work
· MIL illuminated
(13L engine only)
Possible Cause:
· Faulty harness
· Faulty harness
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
ECM SPN 2629, Engine Turbocharger Compressor Outlet Temperature MID 128 PID 404
Type of fault: FMI 0
FMI 2
FMI 4
FMI Description:
Fault Condition:
Possible Symptoms:
· Data valid but above
normal operational range - Most severe level
· Estimated engine
turbocharger discharge temperature error.
· Engine derate
· Data erratic,
intermittent or incorrect
· Engine
turbocharger outlet temperature signal believed to be not valid (high) (plausibility fault)
· Engine derate · MIL illuminated
· Voltage below
normal, or shorted to low source
· Short circuit -,
measuring line
· MIL illuminated · Yellow electronic
malfunction lamp
illuminated
Possible Cause:
· High ambient temperature · Low barometric pressure · Leak in engine turbocharger inlet tube · Engine turbocharger outlet temperature
sensor
· Faulty sensor · Faulty harness
FMI 5
· Current below
normal or open circuit
· Short circuit +,
measuring line
· Open circuit
FMI 13 FMI 15
FMI 17
· Out of calibration
· Sensor out of
range
· Data valid but above
normal operating range - Least severe level
· Sensor out of
range
· Data valid but below
normal operating range - Least severe level
· Sensor out of
range
· MIL illuminated · Yellow electronic
malfunction lamp illuminated
· MIL illuminated
· Faulty sensor · Faulty harness
· Faulty sensor
· · MIL illuminated
Faulty sensor
· · MIL illuminated
Faulty sensor
ECM SPN 2659, Engine Exhaust Gas Recirculation (EGR) Mass Flow Rate MID 128 PPID 35
Type of fault:
FMI 0
FMI Description:
Fault Condition:
· · Data valid but above EGR flow is too
normal operational
high
range
Possible Symptoms:
· MIL illuminated · Exhaust smoke
Possible Cause:
· Faulty EGR system
53
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
FMI 1 FMI 16 FMI 18
· · Data valid but below EGR flow is too
normal operational
low
range
· Data valid but above
normal operating range - Moderately severe level
· EGR flow is too
high
· Data valid but below
normal operating range - Moderately severe level
· EGR flow is too
low
· MIL illuminated
· MIL illuminated · Exhaust smoke
· MIL illuminated
· Faulty EGR system · Clogged EGR cooler
· Faulty EGR system · Faulty harness or connector
· Faulty EGR system · Clogged EGR cooler · Faulty harness or connector
ECM SPN 2791, Engine Exhaust Gas Recirculation (EGR) Valve Control MID 128 SID 146
Type of fault:
FMI 3
FMI Description:
· Voltage above
normal, or shorted to high source
FMI 5
· Current below
normal or open circuit
Fault Condition:
· Stuck EGR valve · EGR valve circuit
shorted +
· EGR valve circuit
shorted to
· Open EGR valve
circuit
Possible Symptoms:
· MIL illuminated · Engine derate
· MIL illuminated · Engine derate
Possible Cause:
· Faulty harness or connector · Faulty EGR valve
· Faulty harness or connector · Faulty EGR valve
ECM SPN 2836, Battery Potential/Switched Voltage MID 128 PSID 49
Type of fault:
FMI 3
FMI Description:
· Voltage above
normal, or shorted to high source
Fault Condition:
· Battery voltage
too high
FMI 4
· Voltage below
normal, or shorted to low source
· Battery voltage
too low
Possible Symptoms:
· N/A
· Starter will not
crank
Possible Cause:
· Faulty cab or chassis harness · Charging system fault · External charger
· Faulty cab or chassis harness · Charging system fault · Battery · Fuse
54
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
ECM SPN 3031, Aftertreatment Diesel Exhaust Fluid (DEF) Tank Temperature MID 128 PPID 274
Type of fault: FMI 0
FMI 4 FMI 5 FMI 8
FMI Description:
· Data valid but above
normal operational range - Most severe level
· Voltage below
normal, or shorted to low source
· Current below
normal or open circuit
· Abnormal frequency
or pulse width or period
Fault Condition:
· Aftertreatment
Diesel Exhaust Fluid (DEF) tank temperature too high
· Date data
message missing on SAE J1587 data link. (Cluster error).
· Short Circuit -
· Short Circuit + · Open Circuit
· Sensor ripple is
not too high
Possible Symptoms:
· MIL illuminated · No Aftertreatment
Diesel Exhaust Fluid (DEF) dosing
· MIL illuminated
· MIL illuminated
· N/A
Possible Cause:
· DEF tank pickup assembly/sensor
failure
· DEF tank pickup assembly/sensor
failure
· DEF tank pickup asssembly/sensor
wiring or connectors
· DEF tank pickup assembly/sensor
failure
· DEF tank pickup assembly/sensor
wiring or connectors
· DEF tank pickup assembly/sensor
failure
· DEF tank pickup `assembly/sensor
wiring or connectors
ECM SPN 3064, Aftertreatment DPF System Monitor MID 128 PPID 326
Type of fault: FMI 0
FMI 10
FMI 11
FMI Description:
Fault Condition:
Possible Symptoms:
· Data valid but above
normal operational range - Most severe level
· Moderately high
soot load
· Yellow electronic
malfunction lamp
illuminated
· Medium to high
engine derate
· Abnormal rate of
change
· Soot loading high
due to heavy load or use (no problem)
· Yellow electronic
malfunction lamp illuminated
· Engine derate
· Root cause not
known
· Critically high soot
load
· Red engine
shutdown lamp illuminated
· High engine
derate
· Engine derate
Possible Cause:
· Diesel Particulate Filter (DPF) clogged · After Treatment Fuel Injector clogged · Regeneration disabled by driver or
other component
· No error, condition occurs during heavy
load or use with high soot loading
· Diesel Particulate Filter (DPF) clogged · Aftertreatment hydrocarbon doser
(injector)
· Regeneration disabled by driver or
other component
55
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
ECM SPN 3216, Aftertreatment Intake NOx MID 128 PPID 348
Type of fault: FMI 2 FMI 3 FMI 5 FMI 9
FMI 11
FMI 12 FMI 13 FMI 14
FMI Description:
· Data erratic,
intermittent or incorrect
· Voltage above
normal, or shorted to high source
· Current below
normal or open circuit
· Abnormal update
rate
· Root cause not
known
· Bad intelligent
device or component
· Out of calibration
· Special instructions
Fault Condition:
· Inlet NOx sensor
error (plausibility)
Possible Symptoms:
· MIL illuminated
· · Short Circuit, NOx MIL illuminated
signal
· · Open Circuit, NOx MIL illuminated
signal
· Missing signal
from NOx sensor
· MIL illuminated · Yellow electronic
malfunction lamp
illuminated
· NOx sensor
measures near zero for long time with high load
· MIL illuminated
· · NOx-sensor signal MIL illuminated
corrupt (incorrect value)
· NOx-sensor
activation (incorrect value)
· MIL illuminated
· Missing signal
from sensor due to battery voltage
· MIL illuminated
Possible Cause:
· Engine out NOx high · Faulty NOx sensor
· Faulty wiring between NOx sensor and
NOx sensor ECU
· Faulty NOx sensor · Faulty wiring between NOx sensor and
NOx sensor ECU
· Faulty NOx sensor · Loss of communication from NOx
sensor ECU and Engine Control Module (ECM)
· Faulty NOx sensor
· Faulty NOx sensor
· Faulty NOx sensor
· Voltage to NOx sensor is too high or
too low
· Faulty harness to sensor
ECM SPN 3226, Aftertreatment Outlet NOx MID 128 PPID 270/ PSID 90
MID 233 Fault code sent by MID 128 Engine control unit
Type of fault
FMI 2
FMI Description:
· Data erratic,
intermittent or incorrect
Fault Condition:
Possible Symptoms:
· Inlet NOx sensor
error (plausibility)
· Mismatch between
sensors
· MIL illuminated
FMI 3
· Voltage above
normal or shorted to high source
· · Short Circuit, NOx MIL illuminated
signal
FMI 5
· Current below
normal or open circuit
· · Open Circuit, NOx MIL illuminated
signal
56
Possible Cause
· Engine out NOx high · Faulty NOx sensor · Aftertreatment Diesel Exhaust Fluid
(DEF) quality
· Faulty wiring between NOx sensor and
NOx sensor ECU
· Faulty NOx sensor
· Faulty wiring between NOx sensor and
NOx sensor ECU
· Faulty NOx sensor
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
MID 233 Fault code sent by MID 128 Engine control unit (cont'd.)
FMI 9 FMI 11 FMI 12 FMI 13 FMI 14 FMI 31
· Abnormal update
rate
· Missing signal
from NOx sensor
· MIL illuminated · Yellow electronic
malfunction lamp
illuminated
· Root cause not
known
· NOx sensor
measures near zero for long time with high load
· MIL illuminated
· Bad intelligent
device or component
· · NOx-sensor signal MIL illuminated
corrupt (incorrect value)
· Out of calibration
· NOx-sensor
activation (incorrect value)
· MIL illuminated
· Special instructions
· Missing signal
from sensor due to battery voltage
· MIL illuminated
· Condition exists
· Inlet NOx sensor
error
· Mismatch between
sensors
· MIL illuminated
· Loss of communication from NOx
sensor ECU and Engine Control Module (ECM)
· Faulty NOx sensor
· Faulty NOx sensor
· Faulty NOx sensor
· Voltage to NOx sensor is too high or
too low
· Faulty harness to sensor · Engine out NOx high · Faulty NOx sensor · Aftertreatment Diesel Exhaust Fluid
(DEF) quality
ECM SPN 3245, Aftertreatment DPF Outlet Temperature MID 128 PPID 436
Type of fault: FMI 0
FMI 2
FMI 4
FMI Description:
Fault Condition:
Possible Symptoms:
Possible Cause:
· Data valid but above
normal operational range - Most severe level
· Temperature
critically too high
· Low engine power
· Restricted Catalyst · Intake air leak · Faulty sensor
· Data erratic,
intermittent or incorrect
· Sensor is
not rational (plausibility)
· MIL illuminated · Regeneration not
possible
· Faulty sensor · Exhaust system leak · Faulty harness connectors or
connections
· Voltage below
normal, or shorted to low source
· Short to ground on
the metering side of the circuit
· MIL illuminated · Regeneration not
possible
· Faulty harness · Faulty sensor · Aftertreatment control module (ACM)
57
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
FMI 5 FMI 15
· Current below
normal or open circuit
· Short to battery on
the metering side of the circuit
· Open in the
metering side of the circuit
· Open in the
ground side of the circuit
· MIL illuminated
· Data valid but above
normal operating range - Least severe level
· Temperature
sensor is out of
range (high)
· Sensor indicates a
invalid value
· MIL illuminated
· Faulty harness · Faulty sensor · Aftertreatment control module (ACM)
· Faulty harness · Faulty sensor
ECM SPN 3249, Aftertreatment DPF Intake Temperature MID 128 PPID 387
Type of fault: FMI 2
FMI 4 FMI 5
FMI 15
FMI Description:
· Data erratic,
intermittent or incorrect
Fault Condition:
· Sensor is
not rational (plausibility)
Possible Symptoms:
· MIL illuminated · Aborted
regeneration
· Voltage below
normal, or shorted to low source
· Short to ground on
the metering side of the circuit
· MIL illuminated · Aborted
regeneration
· Current below
normal or open circuit
· Short to battery on
the metering side of the circuit
· Open in the
metering side of the circuit
· Open in the
ground side of the circuit
· MIL illuminated · Regeneration not
possible
· Data valid but above
normal operating range - Least severe level
· Temperature
sensor is out of
range (high)
· Sensor indicates a
invalid value
· MIL illuminated
Possible Cause:
· Faulty harness · Faulty harness connectors or
connections
· Exhaust system leak · Faulty sensor · Faulty harness · Faulty sensor · Aftertreatment control module (ACM) · Faulty harness · Faulty sensor · Aftertreatment control module (ACM)
· Faulty harness · Faulty sensor
58
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
ECM SPN 3250, Aftertreatment Diesel Particulate Filter (DPF) Intermediate Gas Temperature MID 128 PPID 440/ PSID 22
Type of fault: FMI 1
FMI 2
FMI 3
FMI 5
FMI 9 FMI 10
FMI 11
FMI Description:
Fault Condition:
Possible Symptoms:
· Data valid but below
normal operational range - Most severe level
· Maximum
allowed multiple aftertreatment DPF burner flame loses
· Yellow electronic
malfunction lamp illuminated
· Regeneration not
possible, need scab tool to reset
· Data erratic,
intermittent or incorrect
· Aftertreatment
spark assisted DPF flame temperature sensor value deemed not plausible
· MIL illuminated · Yellow electronic
malfunction lamp
illuminated
· Regeneration not
possible
· Voltage above
normal, or shorted to high source
· Circuit shorted to +
· MIL illuminated · Yellow electronic
malfunction lamp
illuminated
· Regeneration not
possible
· Aborted
regeneration
· Current below
normal or open circuit
· Open circuit
· MIL illuminated · Yellow electronic
malfunction lamp
illuminated
· Regeneration not
possible
· Abnormal update
rate
· Aftertreatment
DPF burner flame temperature not controllable
· Yellow electronic
malfunction lamp illuminated
· Abnormal rate of
change
· Maximum
allowed multiple aftertreatment DPF burner flame loses
· Yellow electronic
malfunction lamp illuminated
· Regeneration not
possible, need scab tool to reset
· Failure mode not
identifiable
· Single
aftertreatment DPF burner flame lose
· Yellow electronic
malfunction lamp
illuminated
· Aborted
regeneration
Possible Cause:
· Malfunction in aftertreatment DPF
burner hydrocarbon dosing system
· Faulty sensor
· Faulty harness · Faulty sensor
· Faulty harness · Faulty sensor
· Faulty in Aftertreatment DPF burner
fuel system
· Malfunction in aftertreatment DPF
burner dosing system
· Malfunction in aftertreatment DPF
burner dosing system
59
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
· FMI 13
Out of calibration
· FMI 14
Out of calibration
· Aftertreatment
spark assisted DPF flame temperature not controllable
· N/A
· Single
aftertreatment DPF burner flame lose
· Yellow electronic
malfunction lamp
illuminated
· Regeneration not
possible
· Aborted
regeneration
· Faulty in aftertreatment DPF burner
air system
· Malfunction in aftertreatment DPF
burner dosing system
ECM SPN 3251, Aftertreatment DPF Differential Pressure MID 128 PID 81
Type of fault: FMI 0
FMI 2
FMI 3
FMI Description:
Fault Condition:
Possible Symptoms:
· · Data valid but above Critically high
normal operational
pressure
range
· Engine derate · Red engine
shutdown lamp
illuminated
· Data erratic,
intermittent or incorrect
· Sensor is not
rational
· MIL illuminated
· Voltage above
normal, or shorted to high source
· Short to battery on
the metering side
· Open in the
ground line
· MIL illuminated
FMI 5 FMI 16
· Current below
normal or open circuit
· Open in 5 volt
supply line
· Short to ground in
metering line
· Open in metering
line
· MIL illuminated
· Data valid but above
normal operating range - Moderately severe level
· Moderately high
pressure
· Engine derate
Possible Cause:
· Aftertreatment diesel particulate filter
(DPF) differential pressure sensor failure
· Aftertreatment diesel particulate filter
(DPF) differential pressure sensor failure
· Aftertreatment diesel particulate filter
(DPF) differential pressure sensor failure
· Faulty aftertreatment diesel particulate
filter (DPF) differential pressure sensor connector
· Faulty harness · Aftertreatment diesel particulate filter
(DPF) differential pressure sensor failure
· Faulty harness
· Aftertreatment diesel particulate filter
(DPF) differential pressure sensor failure
60
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
ECM SPN 3363, Aftertreatment Diesel Exhaust Fluid (DEF) Tank Heater MID 128 PSID 75
Type of fault:
FMI 2
FMI Description:
· Data erratic,
intermittent or incorrect
Fault Condition:
· Commanded
valve position is not plausible
Possible Symptoms:
· N/A
FMI 3 FMI 4 FMI 5
· Voltage above
normal, or shorted to high source
· Voltage below
normal, or shorted to low source
· Current below
normal or open circuit
· Circuit shorted +
· Circuit shorted · Open circuit · Open circuit
· N/A · N/A · N/A
Possible Cause:
· Faulty harness or connectors · Aftertreatment DEF tank temperature
sensor
· Aftertreatment DEF tank heating valve · Aftertreatment DEF pump assembly
· Aftertreatment DEF pump assembly
· Aftertreatment DEF pump assembly
ECM SPN 3471, Aftertreatment Fuel Pressure Control Actuator/ MP8 Engine MID 128 PPID 328
Type of FMI Description: fault:
Fault Condition:
Possible Symptoms:
Possible Cause:
FMI 3 FMI 4 FMI 5
· Voltage above
normal, or shorted to high source
· Voltage below
normal, or shorted to low source
· Current below
normal or open circuit
· Circuit shorted to
battery
· Circuit shorted to
ground
· Open circuit
· MIL illuminated · Yellow electronic
malfunction lamp illuminated
· Aborted
regeneration
· MIL illuminated · Yellow electronic
malfunction lamp illuminated
· Aborted
regeneration
· MIL illuminated · Yellow electronic
malfunction lamp illuminated
· Aborted
regeneration
· Faulty harness · Actuator failure
· Faulty harness · Actuator failure
· Faulty harness · Actuator failure
61
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
FMI 7 FMI 14
· Mechanical system
not responding or out of adjustment
· Special instructions
· Aftertreatment
hydrocarbon doser fuel pressure too low
· Aftertreatment
hydrocarbon doser fuel pressure too high
· MIL illuminated · Yellow electronic
malfunction lamp illuminated
· Regeneration not
possible
· MIL illuminated · Yellow electronic
malfunction lamp illuminated
· Regeneration not
possible
· Fuel shut off valve stuck open · Faulty fuel pressure sensor
· Fuel shut off valve leakage
ECM SPN 3471, Aftertreatment Fuel Pressure Control Actuator/ MP7 Engine MID 128 PSID 111
Type of fault:
FMI 3
FMI Description:
· Voltage above
normal, or shorted to high source
FMI 4
· Voltage below
normal, or shorted to low source
FMI 5
· Current below
normal or open circuit
Fault Condition:
· Circuit shorted to
battery
· Circuit shorted to
ground
· Open circuit
Possible Symptoms:
· MIL illuminated · Yellow electronic
malfunction lamp illuminated
· Regeneration not
possible
· MIL illuminated · Yellow electronic
malfunction lamp illuminated
· Regeneration not
possible
· MIL illuminated · Yellow electronic
malfunction lamp illuminated
· Regeneration not
possible
Possible Cause:
· Faulty harness · Faulty connector · Faulty aftertreatment fuel pump
· Faulty harness · Faulty connector · Faulty aftertreatment fuel pump
· Faulty harness · Faulty connector · Faulty aftertreatment fuel pump
62
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
FMI 12 FMI 14
· Bad intelligent
device or component
· Special instructions
· Aftertreatment
DPF fuel control valve fuel pressure too low
· Aftertreatment
DPF fuel control valve fuel pressure too high
· MIL illuminated · Yellow electronic
malfunction lamp illuminated
· Regeneration not
possible
· MIL illuminated · Yellow electronic
malfunction lamp illuminated
· Regeneration not
possible
· Faulty aftertreatment fuel pump
· Faulty harness · Faulty aftertreatment fuel pump
ECM SPN 3472, Aftertreatment Diesel Particulate Filter (DPF) Air Pressure Control Actuator MID 128 PSID 58
Type of fault:
FMI 3
FMI Description:
· Voltage above
normal, or shorted to high source
FMI 4
· Voltage below
normal, or shorted to low source
FMI 5
· Current below
normal or open circuit
Fault Condition:
· Circuit shorted to
+
· Circuit shorted to
· Open circuit
Possible Symptoms:
· MIL illuminated · Yellow electronic
malfunction lamp illuminated
· Aborted
regeneration
· Regeneration not
possible
· MIL illuminated · Yellow electronic
malfunction lamp illuminated
· Regeneration not
possible
· MIL illuminated · Yellow electronic
malfunction lamp illuminated
· Aborted
regeneration
· Regeneration not
possible
Possible Cause:
· Faulty harness · Faulty air shutoff valve
· Faulty harness · Faulty air shutoff valve
· Faulty harness · Faulty air shutoff valve
63
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
ECM SPN 3473, Aftertreatment Failed to Ignite MID 128 PSID 22
Type of fault: FMI 7
FMI 14
FMI Description:
· Mechanical system
not responding or out of adjustment
· Special instructions
Fault Condition:
Possible Symptoms:
· Multiple failed
aftertreatment diesel particulate filter (DPF) ignition failures
· Yellow electronic
malfunction lamp
illuminated
· Aborted
regeneration
· N/A
· Yellow electronic
malfunction lamp
illuminated
· Aborted
regeneration
Possible Cause:
· Faulty aftertreatment DPF ignition coil · Aftertreatment DPF burner system
malfunction
· Hardware failure
· Aftertreatment ignition system
malfunction
ECM SPN 3480, Aftertreatment Diesel Particulate Filter (DPF) Fuel Pressure/ MP8 Engine MID 128 PPID 437/PSID 108
Type of fault: FMI 2
FMI 3
FMI 5
FMI 7
FMI Description:
Fault Condition:
Possible Symptoms:
· Data erratic,
intermittent or incorrect
· DPF fuel
pressure sensor is not rational (plausibility)
· Aftertreatment
hydrocarbon doser fuel pressure too low
· MIL illuminated · Yellow electronic
malfunction lamp
illuminated
· Regeneration not
possible
· Voltage above
normal or shorted to high source
· Short to battery on
the metering side
· Open in the
ground line
· MIL illuminated · Yellow electronic
malfunction lamp
illuminated
· Regeneration not
possible
· Current below
normal or open circuit
· Open circuit in the
5 volt supply
· Short circuit to
ground in the
metering line
· Open circuit in the
metering line
· MIL illuminated · Yellow electronic
malfunction lamp
illuminated
· Regeneration not
possible
· Mechanical system
not responding or out of adjustment
· Mechanical
problem
· MIL illuminated · Engine derate · Possible engine
shutdown
· Regeneration not
possible
Possible Cause:
· Faulty aftertreatment fuel shut off valve · Faulty DPF fuel pressure sensor · Air in fuel · Fuel filter · Aftertreatment fuel pump
· Faulty harness · Faulty DPF fuel pressure sensor
· Faulty harness · Faulty DPF fuel pressure sensor
· Faulty aftertreatment hydrocarbon
doser system
· Aftertreatment hydrocarbon doser · Faulty aftertreatment fuel shut off valve · Aftertreatment fuel pump
64
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
FMI 10 FMI 15
· Abnormal rate of
change
· Aftertreatment
hydrocarbon doser fuel pressure sensor stuck
· Aftertreatment
hydrocarbon doser fuel pressure too high
· MIL illuminated · Yellow electronic
malfunction lamp
illuminated
· Regeneration not
possible
· Data valid but above
normal operating range - Least severe level
· Fuel pressure
sensor is out of
range
· Sensor indicates a
invalid value
· MIL illuminated · Regeneration not
possible
· Faulty DPF fuel pressure sensor · Faulty aftertreatment fuel shut off valve · Aftertreatment hydrocarbon doser
· Faulty fuel pressure sensor · Faulty harness
ECM SPN 3480, Aftertreatment Diesel Particulate Filter (DPF) Fuel Pressure/ MP7 Engine MID 128 PPID 437
Type of fault: FMI 2
FMI 3
FMI 5
FMI 7
FMI Description:
· Data erratic,
intermittent or incorrect
· Voltage above
normal, or shorted to high source
· Current below
normal or open circuit
· Mechanical system
not responding or out of adjustment
Fault Condition:
Possible Symptoms:
· Aftertreatment
DPF fuel control valve pressure too low
· MIL illuminated · Yellow electronic
malfunction lamp
illuminated
· Regeneration not
possible
· Circuit shorted to
+
· Yellow electronic
malfunction lamp
illuminated
· Regeneration not
possible
· Open circuit
· Yellow electronic
malfunction lamp
illuminated
· Regeneration not
possible
· Fuel pressure
either too high or low
· Yellow electronic
malfunction lamp
illuminated
· Regeneration not
possible
· Possible soot
buildup
Possible Cause:
· Faulty DPF fuel pressure sensor
· Faulty harness · Faulty DPF fuel pressure sensor
· Faulty harness · Faulty DPF fuel pressure sensor
· Faulty fuel pressure regulator · Aftertreatment DPF atomization
module (fuel pressure regulator)
65
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
ECM SPN 3482, Aftertreatment Diesel Particulate Filter (DPF) Fuel Shutoff Valve MID 128 PPID 328
Type of fault: FMI 3
FMI 4
FMI 5
FMI 7
FMI Description:
· Voltage above
normal, or shorted to high source
· Voltage below
normal, or shorted to low source
· Current below
normal or open circuit
· Mechanical system
not responding or out of adjustment
Fault Condition:
· Circuit shorted +
· Circuit shorted
· Open circuit
· Fuel pressure
>620 kPa (90 psi)
Possible Symptoms:
· MIL illuminated · Yellow electronic
malfunction lamp illuminated
· Regeneration not
possible
· Failed
regeneration
· Soot build up
· MIL illuminated · Yellow electronic
malfunction lamp illuminated
· Regeneration not
possible
· Soot build up
· MIL illuminated · Yellow electronic
malfunction lamp illuminated
· Regeneration not
possible
· Failed
regeneration
· Soot build up
· Yellow electronic
malfunction lamp illuminated
· Regeneration not
possible
· Soot build up
Possible Cause:
· Faulty harness · Faulty fuel shutoff valve
· Faulty harness · Faulty fuel shut off valve
· Faulty harness · Faulty fuel shut off valve
· Faulty fuel pressure sensor · Fuel shutoff valve stuck open
ECM SPN 3483, Aftertreatment Regeneration Status MID 128 PSID 47
Type of fault:
FMI 0
FMI Description:
Fault Condition:
· Data valid but above
normal operational range - Most severe level
· Unable to
achieve needed aftertreatment temperature
Possible Symptoms:
· MIL illuminated · Possible
incomplete regeneration
Possible Cause:
· Aftertreatment hydrocarbon doser
clogged
· Aftertreatment hydrocarbon doser fuel
pressure too low
66
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
FMI 1
· · Data valid but below Aftertreatment
normal operational
temperature too
range
high
· MIL illuminated · Possible
incomplete
regeneration
FMI 10
· Abnormal rate of
change
FMI 12
· Bad intelligent
device or component
· Regeneration
period too long
· Regeneration
efficiency too low
· MIL illuminated · Regeneration
frequency too high
· N/A
FMI 13 FMI 15 FMI 17
· Out of Calibration
· Regeneration
period too long
· Data valid but above
normal operating range - Least severe level
· Unable to
achieve needed temperature
· Data valid but below
normal operating range - Least severe level
· Aftertreatment
temperature too high
· MIL illuminated · Regeneration
frequency too high
· MIL illuminated · Possible
incomplete regeneration
· MIL illuminated · Possible
incomplete regeneration
· FMI 31
Condition exists
· Regeneration
period too long
· MIL illuminated · Regeneration
frequency too
high
· Aftertreatment hydrocarbon doser
clogged
· Aftertreatment hydrocarbon doser fuel
pressure too high
· Injector leakage (engine)
· Aftertreatment hydrocarbon doser · Air leakage · Faulty injector(s) (engine)
· Aftertreatment hydrocarbon doser
clogged
· Diesel Particulate Filter (DPF) catalyst
damaged
· Diesel Particulate Filter (DPF) catalyst
clogged
· Aftertreatment hydrocarbon doser · Air leakage · Fuel line clogged
· Aftertreatment hydrocarbon doser
clogged
· Aftertreatment hydrocarbon doser fuel
pressure too low
· Aftertreatment hydrocarbon doser
clogged
· Aftertreatment hydrocarbon doser fuel
pressure too high
· Injector leakage (engine)
· Aftertreatment hydrocarbon doser · Air leakage · Fuel line clogged
ECM SPN 3484, Aftertreatment Ignition MID 128 PSID 110/PSID 127
Type of fault:
FMI 0
FMI Description:
Fault Condition:
· Data valid but above
normal operational range - Most severe level
· N/A
Possible Symptoms:
· MIL illuminated · Yellow electronic
malfunction lamp illuminated
· Aborted
regeneration
Possible Cause:
· Faulty harness · Faulty aftertreatment DPF coil
67
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
FMI 1 FMI 2 FMI 3 FMI 4 FMI 5
· Data valid but below
normal operational range - Most severe level
· N/A
· Data erratic,
intermittent or incorrect
· N/A
· Voltage above
normal, or shorted to high source
· Circuit shorted to
+
· Voltage below
normal, or shorted to low source
· Circuit shorted to
· Current below
normal or open circuit
· Open circuit
· MIL illuminated · Yellow electronic
malfunction lamp illuminated
· Aborted
regeneration
· MIL illuminated · Yellow electronic
malfunction lamp illuminated
· Aborted
regeneration
· MIL illuminated · Yellow electronic
malfunction lamp illuminated
· Aborted
regeneration
· MIL illuminated · Yellow electronic
malfunction lamp illuminated
· Aborted
regeneration
· MIL illuminated · Yellow electronic
malfunction lamp illuminated
· Aborted
regeneration
· Faulty harness · Faulty aftertreatment DPF coil
· Faulty harness · Faulty aftertreatment DPF coil
· Faulty harness · Faulty aftertreatment DPF coil
· Faulty harness · Faulty aftertreatment DPF coil
· Faulty harness · Faulty aftertreatment DPF coil
ECM SPN 3485, Aftertreatment Diesel Particulate Filter (DPF) Atomization Air Pressure MID 128 PPID 277
Type of fault:
FMI 2
FMI Description:
· Data erratic,
intermittent or incorrect
Fault Condition:
· Aftertreatment
DPF differential pressure too low
Possible Symptoms:
· MIL illuminated · Yellow electronic
malfunction lamp illuminated
· Regeneration not
possible
· Soot build up
Possible Cause:
· Faulty sensor · Aftertreatment DPF air shutoff valve
stuck
68
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
FMI 3 FMI 5 FMI 7 FMI 10 FMI 14
· Voltage above
normal, or shorted to high source
· Current below
normal or open circuit
· Mechanical system
not responding or out of adjustment
· Abnormal rate of
change
· Special instructions
· Circuit shorted +
· Open circuit
· Air pressure
mechanical regulator fault
· Aftertreatment
DPF atomization module, air bleed orifice fault
· Air pressure
sensor or aftertreatment DPF atomization module air valve fault
· MIL illuminated · Yellow electronic
malfunction lamp illuminated
· Regeneration not
possible
· Soot build up
· MIL illuminated · Yellow electronic
malfunction lamp illuminated
· Regeneration not
possible
· Soot build up
· Yellow electronic
malfunction lamp illuminated
· Regeneration not
possible
· Soot build up
· MIL illuminated · Yellow electronic
malfunction lamp illuminated
· Regeneration not
possible
· Soot build up
· MIL illuminated · Yellow electronic
malfunction lamp illuminated
· Regeneration not
possible
· Soot build up
· Faulty harness · Faulty connector · Faulty sensor
· Faulty harness · Faulty connector · Faulty sensor
· Faulty aftertreatment DPF atomization
module air pressure regulator
· Clogged internal bleed orifice
· Aftertreatment DPF air shutoff valve · Faulty air pressure sensor · Faulty atomization air valve
ECM SPN 3489, Aftertreatment Air Enable Actuator MID 128 PSID 122
Type of fault:
FMI 2
FMI Description:
· Data erratic,
intermittent or incorrect
Fault Condition:
· Exhaust oxygen
deemed too low
Possible Symptoms:
· MIL illuminated · Yellow electronic
malfunction lamp illuminated
· Regeneration not
possible
· Possible soot
buildup
Possible Cause:
· Faulty combustion air valve
69
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
FMI 3 FMI 4 FMI 5
· Voltage above
normal, or shorted to high source
· Voltage below
normal, or shorted to low source
· Current below
normal or open circuit
· Circuit shorted to
+
· Circuit shorted to
· Open circuit
· MIL illuminated · Yellow electronic
malfunction lamp illuminated
· Regeneration not
possible
· MIL illuminated · Yellow electronic
malfunction lamp illuminated
· Regeneration not
possible
· MIL illuminated · Yellow electronic
malfunction lamp illuminated
· Failed
regeneration
· Regeneration not
possible
· Faulty harness · Faulty connector · Faulty combustion air valve
· Faulty harness · Faulty connector · Faulty combustion air valve
· Faulty harness · Faulty connector · Faulty combustion air valve
ECM SPN 3491, Aftertreatment Diesel Particulate Filter (DPF) Atomization Air Actuator MID 128 PSID 59
Type of fault:
FMI 3
FMI Description:
· Voltage above
normal, or shorted to high source
FMI 4
· Voltage below
normal, or shorted to low source
Fault Condition:
· Circuit shorted to
+
· Circuit shorted to
Possible Symptoms:
· MIL illuminated · Yellow electronic
malfunction lamp illuminated
· Aborted
regeneration
· Regeneration not
possible
· MIL illuminated · Yellow electronic
malfunction lamp illuminated
· Regeneration not
possible
Possible Cause:
· Faulty harness · Faulty atomization air valve
· Faulty harness · Faulty atomization air valve
70
Group 28
FMI 5
· Current below
normal or open circuit
FMI 12
· Bad intelligent
device or component
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
· Open circuit
· Air pressure
difference between atomization air valve opened and closed, too low
· MIL illuminated · Yellow electronic
malfunction lamp illuminated
· Aborted
regeneration
· Regeneration not
possible
· MIL illuminated · Yellow electronic
malfunction lamp illuminated
· Regeneration not
possible
· Possible soot
buildup
· Faulty harness · Faulty atomization air valve
· Faulty atomization air valve
ECM SPN 3509, Sensor Supply Voltage 1 MID 128 SID 232
Type of fault:
FMI 3
FMI Description:
· Voltage above
normal, or shorted to high source
FMI 4
· Voltage below
normal, or shorted to low source
Fault Condition:
· Sensor supply
voltage out of range (high)
· Sensor supply
voltage out of range (low)
Possible Symptoms:
· MIL illuminated · Incorrect sensor
values
· MIL illuminated · Incorrect sensor
values
Possible Cause:
· Faulty harness or connector
· Faulty harness or connector
ECM SPN 3510, Sensor Supply Voltage 2 MID 128 SID 211
Type of fault:
FMI 3
FMI Description:
· Voltage above
normal, or shorted to high source
FMI 4
· Voltage below
normal, or shorted to low source
Fault Condition:
· Circuit shorted +
· Circuit shorted
Possible Symptoms:
· MIL illuminated · Incorrect sensor
values
· MIL illuminated · Incorrect sensor
values
Possible Cause:
· Faulty harness or connector
· Faulty harness or connector
71
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
ECM SPN 3511, Sensor Supply Voltage 3 MID 128 PSID 113
Type of fault: FMI 3
FMI 4
FMI Description:
· Voltage above
normal, or shorted to high source
· Voltage below
normal, or shorted to low source
Fault Condition:
· Circuit shorted + · Circuit shorted
Possible Symptoms:
· MIL illuminated
· MIL illuminated
Possible Cause:
· Faulty harness · Faulty harness
ECM SPN 3512, Sensor Supply Voltage 4 MID 128 PSID 126
Type of fault:
FMI 3
FMI Description:
· Voltage above
normal, or shorted to high source
FMI 4
· Voltage below
normal, or shorted to low source
Fault Condition:
· Sensor supply
circuit shorted +
· Sensor supply
circuit shorted
Possible Symptoms:
· MIL illuminated · Incorrect sensor
values
· MIL illuminated · Incorrect sensor
values
Possible Cause:
· Faulty harness
· Faulty harness
ECM SPN 3522, Aftertreatment Total Fuel Used MID 128 PSID 91
Type of fault:
FMI 0
FMI Description:
Fault Condition:
· Data valid but above
normal operational range
· Aftertreatment
Diesel Exhaust Fluid (DEF) level change too much
Possible Symptoms:
· N/A
FMI 1
· Data valid but below
normal operational range
· Aftertreatment
Diesel Exhaust Fluid (DEF) level change too little
· N/A
Possible Cause:
· DEF system leak · Wrong DEF tank · Aftertreatment DEF Dosing Module
failure or wrong module
· DEF tank level sensor stuck · DEF system clog · Wrong DEF tank · Aftertreatment DEF Dosing Module
failure or wrong module
72
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
FMI 16
· Data valid but above
normal operating range - Moderately severe level
· Aftertreatment
Diesel Exhaust Fluid (DEF) level change too much
· N/A
FMI 18
· Data valid but below
normal operating range - Moderately severe level
· Aftertreatment
Diesel Exhaust Fluid (DEF) level change too little
· N/A
· DEF system leak · Wrong DEF tank · Aftertreatment DEF Dosing Module
failure or wrong module
· DEF tank level sensor stuck · DEF system clog · Wrong DEF tank · Aftertreatment DEF Dosing Module
failure or wrong module
ECM SPN 3556, Aftertreatment Hydrocarbon Doser/ MP8 Engine MID 128 PPID 329
Type of FMI Description: fault:
Fault Condition:
Possible Symptoms:
Possible Cause:
FMI 3 FMI 4 FMI 5 FMI 13 FMI 14
· Voltage above
normal, or shorted to high source
· Voltage below
normal, or shorted to low source
· Current below
normal or open circuit
· Out of calibration
· Special instructions
· Circuit shorted to
battery
· Circuit shorted to
ground
· Open circuit
· Aftertreatment
hydrocarbon doser clogged
· Aftertreatment
hydrocarbon doser leaking
· MIL illuminated · Yellow electronic
malfunction lamp illuminated
· Regeneration not
possible
· MIL illuminated · Yellow electronic
malfunction lamp illuminated
· Regeneration not
possible
· MIL illuminated · Yellow electronic
malfunction lamp illuminated
· Regeneration not
possible
· MIL illuminated
· MIL illuminated · Yellow electronic
malfunction lamp illuminated
· Regeneration not
possible
· Faulty harness · Aftertreatment hydrocarbon doser
failure
· Faulty harness · Aftertreatment hydrocarbon doser
failure
· Faulty harness · Aftertreatment hydrocarbon doser
failure
· Aftertreatment hydrocarbon doser
failure
· Fuel shut off valve · Fuel supply failure · Aftertreatment hydrocarbon doser
failure
73
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
ECM SPN 3556, Aftertreatment Hydrocarbon Doser/ MP7 Engine MID 128 PPID 329
Type of fault:
FMI 3
FMI Description:
· Voltage above
normal, or shorted to high source
FMI 4
· Voltage below
normal, or shorted to low source
FMI 5
· Current below
normal or open circuit
Fault Condition:
· Circuit shorted to
+
· Circuit shorted to
· Open circuit
Possible Symptoms:
· MIL illuminated · Yellow electronic
malfunction lamp illuminated
· Regeneration not
possible
· MIL illuminated · Yellow electronic
malfunction lamp illuminated
· Regeneration not
possible
· MIL illuminated · Yellow electronic
malfunction lamp illuminated
· Regeneration not
possible
Possible Cause:
· Faulty harness · Faulty connector · Aftertreatment DPF control valve
failure
· Faulty harness · Faulty connector · Aftertreatment DPF control valve
failure
· Faulty harness · Faulty connector · Aftertreatment DPF control valve
failure
ECM SPN 3597, Aftertreatment Diesel Particulate Filter (DPF) Regeneration too Frequent MID 128 PSID 119
Type of fault:
FMI 3
FMI Description:
· Voltage above
normal, or shorted to high source
Fault Condition:
· Circuit shorted +
Possible Symptoms:
· MIL illuminated
Possible Cause:
· Faulty harness · Faulty connector · Aftertreatment DEF line heater 1 or 3
failure
· Aftertreatment DEF pump assembly
failure
· Aftertreatment DEF tank heating valve
failure
· Aftertreatment Control Module (ACM)
74
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
FMI 4
· Voltage below
normal, or shorted to low source
· Circuit shorted
· MIL illuminated
· Faulty harness · Faulty connector · Aftertreatment DEF line heater 1 or 3
failure
· Aftertreatment DEF pump assembly
failure
· Aftertreatment DEF tank heating valve
failure
· Aftertreatment Control Module (ACM)
FMI 5
· Current below
· Open circuit
· · MIL illuminated
Faulty harness
normal or open circuit
· Faulty connector · Aftertreatment DEF line heater 1 or 3
failure
· Aftertreatment DEF pump assembly
failure
· Aftertreatment DEF tank heating valve
ECM
SPN
3675,
Engine
Turbocharger
Compressor·
Bfayilupreass Valve
Aftertreatment Control
Position
Module (ACM)
MID 128 PPID 330
Type of fault:
FMI 3
FMI Description:
· Voltage above
normal, or shorted to high source
FMI 4
· Voltage below
normal, or shorted to low source
Fault Condition:
· Circuit shorted + · On/off valve can't
be activated
· Short circuit · Valve constantly
activated
Possible Symptoms:
Possible Cause:
· MIL illuminated · Yellow electronic
malfunction lamp
illuminated
· Regeneration not
possible
· High engine
braking without
request
· Driveability
affected
· Faulty bypass valve solenoid · Faulty harness · Faulty harness connector
· MIL illuminated · Yellow electronic
malfunction lamp
illuminated
· Major engine
derate
· Exhaust manifold
overheating
· Engine shut down
· Faulty bypass valve solenoid · Faulty harness · Faulty harness connector
75
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
FMI 5 FMI 7
· Current below
normal or open circuit
· Mechanical system
not responding or out of adjustment
· Open circuit · On/off valve can't
be activated
· Mechanically
Stuck
· On/off valve can't
be activated
· MIL illuminated · Yellow electronic
malfunction lamp
illuminated
· Regeneration not
possible
· High engine
braking without
request
· Driveability
affected
· Faulty bypass valve solenoid · Faulty harness · Faulty harness connector
· MIL illuminated · Yellow electronic
malfunction lamp
illuminated
· Regeneration not
possible
· High engine
braking without
request
· Driveability
affected
· Valve constantly
activated
· Major engine
derate
· Exhaust manifold
overheating
· Engine shut down
· Leaking pipes · Faulty bypass valve solenoid
ECM SPN 3695, Aftertreatment Diesel Particulate Filter (DPF) Switch/MP8 Engine MID 128 PSID 114
Type of fault:
FMI 9
FMI Description:
· Abnormal update
rate
Fault Condition:
· Signal
missing from aftertreatment DPF switch
Possible Symptoms:
· Yellow electronic
malfunction lamp illuminated
Possible Cause:
· Faulty harness
ECM SPN 3720, Aftertreatment DPF Ash Load Percent MID 128 PPID 337
Type of fault:
FMI 0
FMI Description:
Fault Condition:
· Data valid but above
normal operational range - Most severe level
· Ash level too high
Possible Symptoms:
· Yellow electronic
malfunction lamp illuminated
Possible Cause:
· Need service, ash level is too high
76
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
ECM SPN 3936, Aftertreatment DPF System MID 128 PSID 28
Type of fault: FMI 0
FMI 1
FMI Description:
Fault Condition:
· Data valid but above
normal operational range - Most severe level
· Aftertreatment
DPF differential pressure sensor value too high
· Data valid but below
normal operational range - Most severe level
· Aftertreatment
DPF differential pressure sensor value too low
Possible Symptoms:
· MIL illuminated
· MIL illuminated
Possible Cause:
· Aftertreatment DPF differential
pressure sensor
· Aftertreatment particulate filter
· Aftertreatment DPF differential
pressure sensor
· Aftertreatment particulate filter
ECM SPN 4094, NOx Limits Exceeded Due to Insufficient Diesel Exhaust Fluid (DEF) Quality MID 128 PSID 90
Type of fault: FMI 1
FMI 14
FMI 18
FMI Description:
Fault Condition:
Possible Symptoms:
· Data valid but below
normal operational range - Most severe level
· Aftertreatment
Diesel Exhaust Fluid (DEF) dosing too low
· Yellow electronic
malfunction lamp illuminated
· Engine derate
· Special Instructions
· Aftertreatment
Diesel Exhaust Fluid (DEF) dosing too low
· Yellow electronic
malfunction lamp illuminated
· Engine derate
· Data valid but below
normal operating range - Moderately severe level
· Aftertreatment
Diesel Exhaust Fluid (DEF) dosing too low
· Yellow electronic
malfunction lamp illuminated
· Engine derate
Possible Cause:
· DEF quality · Aftertreatment DEF line clogged · Aftertreatment doser · Aftertreatment control module failure
· DEF quality · Aftertreatment DEF line clogged · Aftertreatment DEF dosing · Aftertreatment control module failure
· DEF quality · Aftertreatment DEF line clogged · Aftertreatment DEF dosing · Aftertreatment control module failure
ECM SPN 4095, NOx Limits Exceeded Due to Interrupted Diesel Exhaust Fluid (DEF) Dosing MID 128 PSID 90
Type of FMI Description: fault:
Fault Condition:
Possible Symptoms:
Possible Cause:
FMI 7
· Mechanical system
not responding or out of adjustment
· Dosing failure
· MIL illuminated · Aftertreatment
Diesel Exhaust
Fluid (DEF) low
usage
· DEF level · Faulty DEF pump · Leak in DEF hose
77
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
ECM SPN 4334, Afterteatment Diesel Exhaust Fluid (DEF) Dosing Absolute Pressure MID 128 PPID 273
Type of FMI Description: fault:
Fault Condition:
Possible Symptoms:
Possible Cause:
FMI 1 FMI 4 FMI 5
· Data valid but below
normal operational range - Most severe level
· DEF system
leakage detected
· Voltage below
normal, or shorted to low source
· Short Circuit -
· Current below
normal or open circuit
· Short Circuit + · Open Circuit
· MIL illuminated · No Aftertreatment
Diesel Exhaust Fluid (DEF) dosing
· MIL illuminated · No Aftertreatment
Diesel Exhaust Fluid (DEF) dosing
· MIL illuminated · Yellow electronic
malfunction lamp illuminated
· No Aftertreatment
Diesel Exhaust Fluid (DEF) dosing
· DEF pump · DEF hose · Aftertreatment DEF dosing (injector) · DEF pump assembly
· DEF pump assembly
ECM SPN 4339, Aftertreatment SCR Feedback Control Status MID 128 PSID 90
Type of fault: FMI 0
FMI 1
FMI Description:
Fault Condition:
Possible Symptoms:
· Data valid but above
normal operational range - Most severe level
· Adaptation too
high
· N/A
· Data valid but below
normal operational range - Most severe level
· Adaptation too low
· N/A
FMI 10
· Abnormal rate of
change
· Adaptation too
high
· N/A
FMI 12
· Bad intelligent
device or component
· · Adaptation too low N/A
Possible Cause:
· NOx sensor · Aftertreatment Diesel Exhaust Fluid
(DEF) dosing system failure
· NOx sensor · Aftertreatment Diesel Exhaust Fluid
(DEF) dosing system failure
· DEF quality
· NOx sensor · Aftertreatment Diesel Exhaust Fluid
(DEF) dosing system failure
· NOx sensor · Aftertreatment Diesel Exhaust Fluid
(DEF) dosing system failure
· DEF quality
78
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
ECM SPN 4354, Aftertreatment Diesel Exhaust Fluid (DEF) Line Heater 1 MID 128 PSID 103
Type of fault:
FMI 3
FMI Description:
· Voltage above
normal, or shorted to high source
Fault Condition:
· Circuit shorted +
Possible Symptoms:
· N/A
FMI 4
· Voltage below
normal, or shorted to low source
· Circuit shorted
· N/A
FMI 5
· Current below
normal or open circuit
· Open circuit
· N/A
Possible Cause:
· Faulty harness · Faulty connector · Aftertreatment DEF line heater 1
failure
· Faulty harness · Faulty connector · Aftertreatment DEF line heater 1
failure
· Faulty harness · Faulty connector · Aftertreatment DEF line heater 1
failure
ECM SPN 4356, Aftertreatment Diesel Exhaust Fluid (DEF) Line Heater 3 MID 128 PSID 102
Type of fault:
FMI 3
FMI Description:
· Voltage above
normal, or shorted to high source
Fault Condition:
· Circuit shorted +
Possible Symptoms:
· N/A
FMI 4
· Voltage below
normal, or shorted to low source
· Circuit shorted
· N/A
FMI 5
· Current below
normal or open circuit
· Open circuit
· N/A
Possible Cause:
· Faulty harness · Faulty connector · Aftertreatment DEF line heater 3
failure
· Faulty harness · Faulty connector · Aftertreatment DEF line heater 3
failure
· Faulty harness · Faulty connector · Aftertreatment DEF line heater 3
failure
ECM SPN 4374, Aftertreatment Diesel Exhaust Fluid (DEF) Pump Motor Speed MID 128 PSID 87
Type of fault:
FMI 1
FMI Description:
· Data valid but below
normal operational range - Most severe level
Fault Condition:
· Slow pump speed
Possible Symptoms:
· MIL illuminated · No Aftertreatment
Diesel Exhaust Fluid (DEF) dosing
Possible Cause:
· Faulty harness · Faulty connector · Aftertreatment DEF pump assembly
failure
79
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
ECM SPN 4375, Aftertreatment Diesel Exhaust Fluid Pump (DEF) Drive Percentage MID 128 PSID 121
Type of fault:
FMI 0
FMI Description:
Fault Condition:
· Data valid but above
normal operational range - Most severe level
· Circuit shorted +
FMI 1
· Data valid but below
normal operational range - Most severe level
· Circuit shorted · Open circuit
FMI 3
· Voltage above
normal, or shorted to high source
· Circuit shorted +
FMI 4
· Voltage below
normal, or shorted to low source
· Circuit shorted
FMI 5
· Current below
normal or open circuit
· Open circuit
Possible Symptoms:
Possible Cause:
· MIL illuminated · No Aftertreatment
Diesel Exhaust
Fluid (DEF)
dosing
· Faulty harness · Faulty connector · Aftertreatment DEF pump assembly
failure
· MIL illuminated · No Aftertreatment
Diesel Exhaust
Fluid (DEF)
dosing
· Faulty harness · Faulty connector · Aftertreatment DEF pump assembly
failure
· MIL illuminated · No Aftertreatment
Diesel Exhaust
Fluid (DEF)
dosing
· Faulty harness · Faulty connector · Aftertreatment DEF pump assembly
failure
· MIL illuminated · No Aftertreatment
Diesel Exhaust
Fluid (DEF)
dosing
· Faulty harness · Faulty connector · Aftertreatment DEF pump assembly
failure
· MIL illuminated · No Aftertreatment
Diesel Exhaust
Fluid (DEF)
dosing
· Faulty harness · Faulty connector · Aftertreatment DEF pump assembly
failure
FMI 12
· Bad intelligent
device or component
· Open circuit
· MIL illuminated · No Aftertreatment
Diesel Exhaust
Fluid (DEF)
dosing
· Faulty harness · Faulty connector · Aftertreatment DEF pump assembly
failure
FMI 14
· · Special instructions
Voltage to pump
out of range
· MIL illuminated · No Aftertreatment
Diesel Exhaust
Fluid (DEF)
dosing
· Faulty harness · Faulty connector · Aftertreatment DEF pump assembly
failure
80
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
ECM SPN 4376, Aftertreatment Diesel Exhaust Fluid (DEF) Return Valve MID 128 PSID 105
Type of fault:
FMI 3
FMI Description:
· Voltage above
normal, or shorted to high source
Fault Condition:
· Circuit shorted +
Possible Symptoms:
· MIL illuminated · Not possible to
perform afterrun
FMI 4
· Voltage below
normal, or shorted to low source
· Circuit shorted · Open circuit
· MIL illuminated · Not possible to
perform afterrun
FMI 5
· Current below
normal or open circuit
· Open circuit
· MIL illuminated · Not possible to
perform afterrun
FMI 7
· Mechanical system
not responding or out of adjustment
· Possible
mechanical problem with aftertreatment diesel exhaust fluid (DEF) return valve
· MIL illuminated · Not possible to
perform afterrun
Possible Cause:
· Faulty harness · Faulty connector · Aftertreatment DEF pump assembly
failure
· Faulty harness · Faulty connector · Aftertreatment DEF pump assembly
failure
· Faulty harness · Faulty connector · Aftertreatment DEF pump assembly
failure
· Mechanical fault DEF return line
restricted between DEF pump and DEF tank
· Aftertreatment Diesel Exhaust Fluid
(DEF) pump assembly
ECM SPN 4752, Engine Exhaust Gas Recirculation (EGR) Cooler Efficiency MID 128 SID 282
Type of fault:
FMI 7
FMI Description:
· Mechanical system
not responding or out of adjustment
Fault Condition:
· Low EGR cooler
efficiency
Possible Symptoms:
· MIL illuminated
Possible Cause:
· EGR cooler clogged or damaged
ECM SPN 4811, Engine Piston Cooling Oil Pressure MID 128 PPID 8
Type of fault:
FMI 1
FMI Description:
Fault Condition:
· Data valid but below
normal operational range - Most severe level
· Pressure below
range
Possible Symptoms:
· Red engine
shutdown lamp illuminated
Possible Cause:
· N/A
81
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
FMI 3 FMI 5
· Voltage above
· Short to battery in
normal or shorted to metering line
high source
· Yellow electronic
malfunction lamp illuminated
· Current below
normal or open circuit
· Open in the
metering side sensor circuit
· Open circuit in the
ground line sensor circuit
· Yellow electronic
malfunction lamp illuminated
· Faulty harness
· Faulty sensor · Faulty harness
ECM SPN 4813, Engine Oil Thermostat Bypass Valve Opening MID 128 PSID 72
Type of fault:
FMI 3
FMI Description:
· Voltage above
normal, or shorted to high source
FMI 4
· Voltage below
normal, or shorted to low source
FMI 5
· Current below
normal or open circuit
Fault Condition:
· Circuit shorted + · Circuit shorted
· Open circuit
Possible Symptoms:
· Yellow electronic
malfunction lamp illuminated
· Oil thermostat is
always open
· Yellow electronic
malfunction lamp illuminated
· Oil thermostat is
always closed
· Engine may
overheat
· Yellow electronic
malfunction lamp illuminated
· Oil thermostat is
always open
· May have
increased fuel consumption
Possible Cause:
· Faulty actuator · Faulty harness
· Faulty actuator · Faulty harness
· Faulty actuator · Faulty harness
ECM SPN 4815, Engine Cooling Fan Thermal Switch Position MID 128 PPID 333
Type of fault:
FMI 3
FMI Description:
· Voltage above
normal, or shorted to high source
Fault Condition:
· Circuit shorted to
battery
Possible Symptoms:
· Yellow electronic
malfunction lamp illuminated
Possible Cause:
· Faulty harness · Faulty harness connector · Faulty sensor
82
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
FMI 4 FMI 5
· Voltage below
normal, or shorted to low source
· Short circuit -
· Current below
normal or open circuit
· Open circuit
· Yellow electronic
malfunction lamp illuminated
· Yellow electronic
malfunction lamp illuminated
· Faulty harness · Faulty harness connector · Faulty sensor
· Faulty harness · Faulty harness connector · Faulty sensor
ECM SPN 5246, Aftertreatment SCR Operator Inducement Severity MID 128 PSID 46
Type of fault: FMI 0
FMI 15
FMI 16
FMI Description:
Fault Condition:
· Data valid but above
normal operational range - Most severe level
· Severe SCR
system fault detected Warning fault
· Data valid but above
normal operating range - Least severe level
· Moderate SCR
system fault detected Warning fault
· Data valid but above
normal operating range - Moderately severe level
· SCR system
fault detected Warning fault
Possible Symptoms:
· Severe engine
derate
Possible Cause:
· N/A
· · Moderate engine
N/A
derate
· Engine derate
· N/A
83
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
ECM SPN 5285, Charge Air Cooler (CAC) Temperature MID 128 PID 52
Type of fault: FMI 7
FMI 18
FMI Description:
· Mechanical system
not responding properly
Fault Condition:
Possible Symptoms:
· · Boost temperature MIL illuminated
too high
(13L engine only)
· · · Data valid but below Boost temperature MIL illuminated
normal operating
too high
(13L engine only)
range
Possible Cause:
· Air flow through charge air cooler
(CAC) too low
· Charge air cooler (CAC) · Air flow through charge air cooler
(CAC) too low
· Charge air cooler (CAC)
ECM SPN 5298, Aftertreatment Diesel Oxidation Catalyst (DOC) Conversion Efficiency MID 128 PSID 99
Type of FMI Description: fault:
Fault Condition:
Possible Symptoms:
Possible Cause:
FMI 7 FMI 18
· Mechanical system
not responding properly
· Hydrocarbon
conversion is too low in the Diesel Oxidation Catalyst (DOC)
· MIL illuminated
· Data valid but below
normal operating range - Moderately severe level
· Hydrocarbon
conversion is too low in the Diesel Oxidation Catalyst (DOC)
· MIL illuminated
· Catalyst failure · DOC temperature sensor
· Catalyst failure · DOC temperature sensor
84
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
ECM SPN 5392, Aftertreatment Diesel Exhaust Fluid (DEF) Dosing Valve Loss of Prime MID 128 PSID 121
Type of fault:
FMI 7
FMI Description:
· Mechanical system
not responding properly
Fault Condition:
· Aftertreatment
Diesel Exhaust Fluid (DEF) pressure build up failure
· FMI 31
Condition exists
· Aftertreatment
Diesel Exhaust Fluid (DEF) pressure build up failure
Possible Symptoms:
Possible Cause:
· MIL illuminated · Yellow electronic
malfunction lamp illuminated
· No Aftertreatment
Diesel Exhaust Fluid (DEF) dosing
· Empty DEF tank · DEF filter clogged · DEF inlet pipe leak or blockage · DEF pump assembly
· MIL illuminated · Yellow electronic
malfunction lamp illuminated
· No Aftertreatment
Diesel Exhaust Fluid (DEF) dosing
· Empty DEF tank · DEF filter clogged · DEF inlet pipe leak or blockage · DEF pump assembly
ECM SPN 5394, Aftertreatment Diesel Exhaust Fluid (DEF) Dosing Valve MID 128 PSID 89
Type of fault: FMI 0
FMI 1
FMI 3 FMI 4 FMI 5
FMI Description:
Fault Condition:
· Data valid but above
normal operational range - Most severe level
· Low side circuit
shorted to +
· Data valid but below
normal operational range - Most severe level
· Short to ground · Low side circuit
open
· Voltage above
normal, or shorted to high source
· Circuit shorted +
· Voltage below
normal, or shorted to low source
· Circuit shorted
· Current below
normal or open circuit
· Open circuit
FMI 14
· Special instructions
· Aftertreatment
DEF dosing clogged or hose clogged
Possible Symptoms:
· MIL illuminated
Possible Cause:
· Aftertreatment DEF dosing pump
assembly
· MIL illuminated
· Aftertreatment DEF dosing pump
assembly
· MIL illuminated
· Aftertreatment DEF dosing pump
assembly
· MIL illuminated
· Aftertreatment DEF dosing pump
assembly
· MIL illuminated · Yellow electronic
malfunction lamp illuminated
· MIL illuminated · Yellow electronic
malfunction lamp illuminated
· Aftertreatment DEF dosing · Aftertreatment DEF dosing pump
assembly
· Aftertreatment DEF doser clogged · Hose clogged
85
Group 28
Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)
ECM SPN 5394, Aftertreatment Diesel Exhaust Fluid (DEF) Dosing Valve MID 128 PSID 90
Type of fault: FMI 1
FMI 17
FMI Description:
Fault Condition:
Possible Symptoms:
· Data valid but below
normal operational range
· Dosing failure · Aftertreatment
Diesel Exhaust Fluid (DEF) dosing amount too low or DEF quality
· MIL illuminated · NOx emissions
too high
· Data valid but below
normal operating range - Least severe level
· Dosing failure · Aftertreatment
Diesel Exhaust Fluid (DEF) dosing amount too low or DEF quality
· MIL illuminated · NOx emissions
too high
Possible Cause:
· NOx sensor · SCR catalyst malfunction · EGR mass flow failure · SCR inlet temperature sensor
· NOx sensor · SCR catalyst malfunction · EGR mass flow failure · SCR inlet temperature sensor
ECM SPN 5485, Aftertreatment Diesel Exhaust Fluid (DEF) Pump Orifice MID 128 PSID 121
Type of fault:
FMI 11
FMI Description:
· Root cause not
known
Fault Condition:
· Aftertreatment
Diesel Exhaust Fluid (DEF) bleed orifice clogged
Possible Symptoms:
· MIL illuminated · Yellow electronic
malfunction lamp illuminated
· No Aftertreatment
Diesel Exhaust Fluid (DEF) dosing
Possible Cause:
· Bleed orifice · Aftertreatment Diesel Exhaust Fluid
(DEF) pressure sensor
86
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Greensboro, NC USA http://www.macktrucks.com PV776-88969578 () 04.2010 © Mack Trucks, Inc., 2010
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