WOMS
U code network Medium severity

U0568 Invalid Data Received from Body Control Module (BCM)

The OBD2 code U0568 indicates that the vehicle's control module has received invalid or corrupted data from the Body Control Module (BCM)

Definition

The OBD2 code U0568 indicates that the vehicle's control module has received invalid or corrupted data from the Body Control Module (BCM)

Common causes

  • Faulty Body Control Module (BCM)
  • Corrupted BCM software
  • Poor electrical connections or wiring issues
  • Short circuits in the wiring harness
  • Faulty sensors or components connected to the BCM
  • Low battery voltage or power supply issues
  • Interference from aftermarket accessories or modifications
  • Communication issues with other modules in the network

Common misdiagnoses

  • Faulty Body Control Module (BCM)
  • Wiring issues or short circuits
  • Faulty communication lines (CAN bus)
  • Malfunctioning sensors
  • Power supply issues
  • Software glitches or updates needed
  • Other module failures (e.g., PCM, ECM)
  • Grounding issues
  • Corroded connectors
  • Battery or charging system problems

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 the Wiring and Connectors

    Visual Inspection: Check the wiring harness and connectors related to the BCM for any signs of damage, corrosion, or loose connections

  3. 3. Connector Pins

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

  4. 4. Check the BCM

    Functionality: Verify that the BCM is functioning correctly. This may involve checking for proper operation of the vehicle's electrical systems that the BCM controls (e.g., lights, locks, etc.)

  5. 5. Software Updates

    Check if there are any software updates available for the BCM from the manufacturer

  6. 6. Inspect Related Modules

    Other modules in the vehicle may be communicating with the BCM. Check for any issues with these modules, as they could be causing the invalid data error

  7. 7. Test the Power and Ground

    Ensure that the BCM is receiving proper power and ground. Use a multimeter to check voltage and ground continuity at the BCM connector

  8. 8. Perform a Hard Reset

    Disconnect the vehicle's battery for a few minutes to reset the BCM and other modules. Reconnect and see if the code reappears

  9. 9. Check for Short Circuits or Open Circuits

    Use a multimeter to check for shorts or open circuits in the wiring that connects the BCM to other modules and sensors

  10. 10. Scan for Communication Issues

    Use a scan tool to monitor communication between the BCM and other modules. Look for any communication errors or timeouts

  11. 11. Replace the BCM (if necessary)

    If all other troubleshooting steps fail and the BCM is determined to be faulty, consider replacing it. Ensure that the new BCM is programmed and configured correctly for your vehicle

  12. 12. Consult Technical Service Bulletins (TSBs)

    Check for any TSBs related to the U0568 code for your specific vehicle make and model. Manufacturers may have specific recommendations or known issues.1

  13. 13. Seek Professional Help

    If you are unable to resolve the issue, consider seeking help from a professional mechanic or dealership, especially if specialized diagnostic equipment is needed.Conclusion Troubleshooting the U0568 code involves a systematic approach to check for wiring issues, module functionality, and communication problems. By following these steps, you can identify the root cause of the problem and take appropriate action to resolve it