1. Product Overview
The KONNWEI MAXOBD Bluetooth OBD2 Scanner is a diagnostic tool designed to connect to your vehicle's On-Board Diagnostics (OBD2) system via Bluetooth. It allows for comprehensive vehicle health monitoring, fault code reading, and real-time data display through a dedicated mobile application.
This device supports full OBD2 diagnostic functions, including reading and clearing Diagnostic Trouble Codes (DTCs), performing battery tests, viewing real-time data streams, acquiring Vehicle Identification Numbers (VIN), capturing freeze frame data, generating diagnostic reports, and conducting on-board monitoring. It is compatible with all OBD2-compliant vehicles manufactured since 1996 and accesses key systems across over 40 vehicle brands.
2. Setup Instructions
- Download the MAXOBD App: Search for "MAXOBD" in your mobile device's app store (iOS or Android) and download the official application.
- Locate OBD2 Port: Identify your vehicle's OBD2 diagnostic port. This port is typically located under the dashboard on the driver's side, though its exact position may vary by vehicle model.
- Plug in the Scanner: Firmly insert the KONNWEI MAXOBD scanner into the vehicle's OBD2 port.
- Turn on Ignition: Turn your vehicle's ignition switch to the "ON" position. The engine should remain off.
- Enable Bluetooth: On your mobile phone, ensure Bluetooth is enabled in your device settings.
- Connect via App: Open the "MAXOBD" app. Tap the Bluetooth icon, usually located in the top left corner of the app interface, to establish a connection with the scanner.

3. Operating Instructions
3.1 Full OBD2 Diagnostic Functions
The MAXOBD scanner provides a comprehensive suite of OBD2 diagnostic capabilities:
- DTC Reading & Clearing: Read and clear Diagnostic Trouble Codes (DTCs) to understand and resolve vehicle issues.
- Battery Test: Monitor your vehicle's battery health and voltage in real-time.
- Real-time Data Viewing: Access live data streams such as coolant temperature, engine speed, and vehicle speed.
- VIN Acquisition: Retrieve your vehicle's Vehicle Identification Number.
- Freeze Frame Data: View a snapshot of sensor data at the moment a fault code was set.
- Diagnostic Report Generation: Create and save detailed diagnostic reports.
- On-Board Monitoring: Perform various on-board monitoring tests.

3.2 Wide Vehicle Compatibility
The MAXOBD scanner is compatible with all OBD2-compliant vehicles manufactured since 1996. It supports in-depth diagnostics for over 40 vehicle brands, accessing key systems such as:
- Engine System
- Gearbox System
- Anti-lock Braking System (ABS)
- Airbag System (SRS)
- Tire Pressure Monitoring System (TPMS)
- Air Conditioning System (HVAC)
- Electronic Parking Brake (EPB) System
- Steering Angle Sensor (SAS) System
- Diesel Particulate Filter (DPF) System
- Immobilizer (IMMO) System


3.3 Efficient Fault Diagnosis and Data Display
The MAXOBD app provides clear insights into your vehicle's health:
- DTC Database: A built-in database with over 35,000 codes helps you quickly understand and address fault codes and engine warning lights.
- Real-time Data: Monitor critical parameters like coolant temperature, engine speed, and vehicle speed with clear, easy-to-read displays.
- Battery Voltage Detection: Intuitively displays real-time battery voltage, helping you regularly check your car battery to extend its life and enhance safety.




4. Maintenance
- Cleaning: Keep the scanner clean and free from dust and moisture. Use a soft, dry cloth for cleaning. Do not use liquid cleaners or solvents.
- Storage: Store the device in a cool, dry place away from direct sunlight and extreme temperatures when not in use.
- Handling: Handle the scanner with care to avoid physical damage. Do not drop or expose it to strong impacts.
- Disassembly: Do not attempt to disassemble or modify the scanner. Unauthorized modifications will void the product warranty.
5. Troubleshooting
- Device Not Connecting:
- Ensure Bluetooth is enabled on your mobile phone before opening the MAXOBD app.
- Verify the scanner is securely plugged into the vehicle's OBD2 port.
- Confirm the vehicle's ignition is in the "ON" position (engine off).
- Try restarting the MAXOBD app and your phone.
- App Not Responding or Freezing:
- Close the MAXOBD app completely and reopen it.
- If the issue persists, restart your mobile phone.
- Ensure your app is updated to the latest version.
- Incorrect Readings or No Data:
- Confirm your vehicle is OBD2 compliant and manufactured after 1996.
- Check for any loose connections between the scanner and the OBD2 port.
- Ensure the app is properly connected to the scanner.
- General Faults: For issues not listed here, refer to the in-app help section or visit the official KONNWEI website for detailed FAQs and support resources.
6. Specifications
| Brand | KONNWEI |
| Model Number | MAXOBD01 |
| Manufacturer Part Number | MAXOBD02 |
| Power Source | Battery Powered (via vehicle OBD2 port) |
| Operating System | Linux |
| Screen Size | 0.1 inches (User interface displayed on connected mobile device) |
| Automotive Fit Type | Universal Fit (for OBD2 compliant vehicles) |
| Included Components | 1 (KONNWEI MAXOBD Scanner Unit) |
| Item Highlight | Car Diagnostic Scanner with Full System Scan Engine Code Reader, Voltage Test, Data Stream for iOS & Android |
7. Warranty Information
Specific warranty details for the KONNWEI MAXOBD Bluetooth OBD2 Scanner are not provided in this manual. For comprehensive warranty information, including coverage duration and terms, please refer to the official KONNWEI website or contact KONNWEI customer support directly.
8. Support
For technical assistance, software updates, or any other inquiries regarding your KONNWEI MAXOBD scanner, please utilize the following resources:
- MAXOBD Application: Access the help or support section within the MAXOBD app for FAQs and troubleshooting guides.
- KONNWEI Official Website: Visit the official KONNWEI website for product information, support documentation, and contact options.







