TOYOTA Technical Service Bulletin

T-SB-0001-10 Rev1 - January 7, 2010

MIL "ON" DTC P0138, P0158 and/or P0606 Diagnostic Tips

Service Category: Engine/Hybrid System

Section: Engine Control

Market: USA

Applicability

YEAR(S)	MODEL(S)	ADDITIONAL INFORMATION
2005-2010	Avalon	VDS(s): BK46K
2007-2009	Camry	VDS(s): BK3EK
2010	Camry	VDS(s): DS41A, DS42A, DS43A, ES41A, ES42A, ES43A
2008	Highlander	VDS(s): DS41A, DS42A, DS43A, ES41A, ES42A, ES43A
2009-2010	Highlander	VDS(s): BK3EH, DK3EH, DS41A, DS42A, DS43A, EK3EH, ES41A, ES42A, ES43A, XK3EH, YK3EH, ZK3EH
2006-2010	RAV4	VDS(s): BK31V, BK32V, BK34V, BK4DV, BK9DV, EK4DV, JK4DV, KK4DV, RK4DV, WK4DV, XK4DV, YK4DV, YK9DV, ZK31V, ZK32V, ZK33V, ZK34V, ZK35V, ZK4DV, ZK9DV
2007-2010	Sienna	VDS(s): BK22C, BK23C, BK29C, BK4CC, DK4CC, JK4CC, KK4CC, MK29C, YK4CC, ZA22C, ZA23C, ZK22C, ZK23C, ZK29C, ZK4CC
2009-2010	Venza	VDS(s): BK11A, BK3BB, ZK11A, ZK3BB

Revision Notice

August 8, 2013 Rev1:

Title has been updated to include DTC P0606.
Any previous printed versions of this bulletin should be discarded.

Introduction

Some vehicles may exhibit a MIL "ON" Diagnostic Trouble Code (DTC) P0138 and/or P0158 (Oxygen Sensor Circuit High Voltage Bank 1 or 2). In some instances a P2195 or P2197 (A/F Sensor Signal Stuck Lean) DTC may also be present. This condition may be caused by incorrect Air Fuel Ratio Sensor response. Additionally, a P0606 (ECM/PCM Processor) DTC may be present due to incorrect Oxygen Sensor operation. The following repair procedures should be used to properly diagnose and repair this condition.

NOTE:

Refer to Service Bulletin No. T-SB-0398-09, “Engine Bank 1 and Bank 2 A/F and O2 Identification” before proceeding to confirm diagnosis is performed on the correct engine bank.
Before proceeding, check for any other applicable Service Bulletin(s). Do not apply this diagnostic procedure if there is an existing Service Bulletin for A/F or O2 sensor DTC(s).

Warranty Information

OP CODE	DESCRIPTION	TIME	OFP	T1	T2
N/A	Not Applicable to Warranty	-	-	-	-

Diagnostic Procedure

HINT: For information on checking circuit open, short, or resistance test procedures please refer to the Technical Information System (TIS), applicable model and model year Repair Manual:

2005 Avalon: General – Identification – “How to Troubleshoot ECU Controlled Systems: Electronic Circuit Inspection Procedure”
2006 / 2007 / 2008 / 2009 / 2010 Avalon: General – Introduction – “Introduction: How to Troubleshoot ECU Controlled Systems: Electronic Circuit Inspection Procedure”
2007 / 2008 / 2009 / 2010 Camry: General – Introduction – “Introduction: How to Troubleshoot ECU Controlled Systems: Electronic Circuit Inspection Procedure”
2008 / 2009 / 2010 Highlander: General - Introduction – “Introduction: How to Troubleshoot ECU Controlled Systems: Electronic Circuit Inspection Procedure”
2006 / 2007 / 2008 / 2009 / 2010 RAV4: General – Introduction – “Introduction: How to Troubleshoot ECU Controlled Systems: Electronic Circuit Inspection Procedure”
2007 / 2008 / 2009 / 2010 Sienna: General – Introduction – “Introduction: How to Troubleshoot ECU Controlled Systems: Electronic Circuit Inspection Procedure”
2009 / 2010 Venza: General - Introduction – “Introduction: How to Troubleshoot ECU Controlled Systems: Electronic Circuit Inspection Procedure”

Step 1: Check all DTCs.

Are DTC(s) other than P0138 or P0158 present?

YES - P2195 and/or P2197 DTC also present: Go to step 3.
YES - P0606 DTC also present: Go to step 4.
NO - Go to step 2.

Step 2: Check the A/F and O2 sensor values for the appropriate bank DTC Freeze Frame Data (FFD).

Is the AFS Voltage B#S1 = 3.35~3.70V AND the O2S B#S2 = 0.70~0.90V?

YES - Replace the appropriate bank Air Fuel Ratio Sensor ONLY (NOT O2 Sensor) to correct the P0138 or P0158 DTC condition.
NO - Inspect the O2 B#S2 circuit for open, short, or high resistance. If no trouble is found, refer to TIS, applicable model and model year Repair Manual for P0138/P0158 diagnosis:

2005 Avalon: Engine/Hybrid System – Engine Control – “SFI System: Diagnosis System”
2006 / 2007 / 2008 / 2009 / 2010 Avalon: Engine/Hybrid System – Engine Control – "2GR-FE Engine Control System: SFI System: Diagnosis System"
2007 / 2008 / 2009 / 2010 Camry: Engine/Hybrid System – Engine Control – “2GR-FE Engine Control System: SFI System: Diagnosis System”
2008 / 2009 / 2010 Highlander: Engine/Hybrid System – Engine Control – “2GR-FE Engine Control System: SFI System: Diagnosis System”
2006 / 2007 / 2008 / 2009 / 2010 RAV4: Engine/Hybrid System – Engine Control – “2GR-FE Engine Control System: SFI System: Diagnosis System”
2007 / 2008 / 2009 / 2010 Sienna: Engine/Hybrid System – Engine Control – “2GR-FE Engine Control System: SFI System: Diagnosis System”
2009/2010 Venza: Engine/Hybrid System – Engine Control – “2GR-FE Engine Control System: SFI System: Diagnosis System”

Step 3: Inspect Air Fuel Ratio Sensor for the appropriate bank.

Does the Air Fuel Ratio Sensor have an open or short on the A1A+ or A1A– wires?

YES - Repair the harness and revaluate the Air Fuel Ratio Sensor operation. Confirm the previous DTC(s) do not reset.
NO - Replace the applicable bank Air Fuel Ratio Sensor ONLY to correct the P2195/P0138 or P2197/P0158 DTC condition. Test drive the vehicle to confirm none of the previous DTC(s) reset.

Step 4: Inspect Oxygen Sensor 2 Freeze Frame Data (FFD) values.

Is the O2S B#S2 voltage more than 1.10v and/or the O2S Impedance B#S2 more than 300 ohms when engine is at normal operating temperature?

YES — Inspect O2 B#S2 circuit for open, short, or high resistance. If no harness issues are found, replace the appropriate bank O2 Sensor ONLY to correct the P0606 DTC.
NO — Follow the Repair Manual diagnostic procedure for P0138/P0158 DTC:

2005 Avalon: Engine/Hybrid System – Engine Control – “SFI System: Diagnosis System”
2006 / 2007 / 2008 / 2009 / 2010 Avalon: Engine/Hybrid System – Engine Control – “2GR-FE Engine Control System: SFI System: Diagnosis System”
2007 / 2008 / 2009 / 2010 Camry: Engine/Hybrid System – Engine Control – “2GR-FE Engine Control System: SFI System: Diagnosis System”
2008 / 2009 / 2010 Highlander: Engine/Hybrid System – Engine Control – “2GR-FE Engine Control System: SFI System: Diagnosis System”
2006 / 2007 / 2008 / 2009 / 2010 RAV4: Engine/Hybrid System – Engine Control – “2GR-FE Engine Control System: SFI System: Diagnosis System”
2007 / 2008 / 2009 / 2010 Sienna: Engine/Hybrid System – Engine Control – “2GR-FE Engine Control System: SFI System: Diagnosis System”
2009 / 2010 Venza: Engine/Hybrid System – Engine Control – “2GR-FE Engine Control System: SFI System: Diagnosis System”

If the MIL "ON" condition continues to occur after this procedure, refer to the Repair Manual for further diagnostic procedures and specifications.

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