WOMS
U code network Medium severity

U2655 Invalid Data Received from Vehicle Dynamics Control Module

The OBD2 code U2655 indicates that the vehicle's control module has received invalid or corrupted data from the Vehicle Dynamics Control Module, which may affect the vehicle's stability and handling systems

Definition

The OBD2 code U2655 indicates that the vehicle's control module has received invalid or corrupted data from the Vehicle Dynamics Control Module, which may affect the vehicle's stability and handling systems

Common causes

  • Faulty Vehicle Dynamics Control Module (VDCM)
  • Poor or damaged wiring/connectors between the VDCM and the ECU
  • Corrupted or incompatible software in the VDCM
  • Malfunctioning sensors related to vehicle dynamics (e.g., wheel speed sensors)
  • Communication issues within the CAN bus system
  • Low battery voltage or electrical system issues
  • Faulty ECU (Engine Control Unit) or other related control modules

Common misdiagnoses

  • Faulty ABS module
  • Defective wheel speed sensors
  • Malfunctioning traction control system
  • Wiring issues or shorts in the harness
  • Faulty vehicle dynamics control module
  • Incorrectly calibrated or programmed modules
  • Battery or power supply issues
  • Faulty engine control module (ECM)

Troubleshooting steps

  1. 1. Check for Additional Codes

    Use an OBD-II scanner to check for any other trouble codes that may be present. Sometimes, multiple codes can provide more context for the issue

  2. 2. Inspect Wiring and Connectors

    Visual Inspection: Check the wiring and connectors related to the Vehicle Dynamics Control Module (VDCM) for any signs of damage, corrosion, or loose connections

  3. 3. Connector Pins

    Ensure that the pins in the connectors are not bent or corroded

  4. 4. Check the Vehicle Dynamics Control Module

    Functionality: Verify that the VDCM is functioning properly. This may involve checking for proper operation of the module and ensuring it is receiving power and ground

  5. 5. Software Updates

    Check if there are any software updates available for the VDCM that may address known issues

  6. 6. Inspect Related Modules

    Since the VDCM communicates with other modules, check for issues in related systems (e.g., ABS, traction control, stability control). Look for codes in these modules that may indicate a problem

  7. 7. Test Communication Lines

    Use a multimeter or oscilloscope to test the communication lines (CAN bus) for proper voltage levels and signals. Look for any interruptions or shorts in the communication network

  8. 8. Check for Ground Issues

    Ensure that the ground connections for the VDCM and related modules are secure and free of corrosion. Poor grounding can lead to communication issues

  9. 9. Clear Codes and Test Drive

    After performing inspections and repairs, clear the trouble codes using the OBD-II scanner and take the vehicle for a test drive to see if the code returns

  10. 10. Consult Technical Service Bulletins (TSBs)

    Check for any TSBs related to the U2655 code or the VDCM for your specific vehicle make and model. Manufacturers may have issued guidance on common issues and fixes

  11. 11. Replace the Vehicle Dynamics Control Module (if necessary)

    If all other troubleshooting steps fail and the VDCM is determined to be faulty, consider replacing the module. Ensure that the replacement module is compatible with your vehicle

  12. 12. Professional Diagnosis

    If you are unable to resolve the issue, consider seeking help from a professional mechanic or dealership that has experience with your vehicle's systems.Conclusion Troubleshooting OBD-II code U2655 involves a systematic approach to identify and rectify issues related to the Vehicle Dynamics Control Module and its communication with other vehicle systems. Always ensure safety and follow manufacturer guidelines when performing diagnostics and repairs