WOMS
U code network Medium severity

U0584 Invalid Data Received from Body Control Module (BCM) - A

The OBD2 code U0584 indicates that the vehicle's control module has received invalid or corrupted data from the Body Control Module (BCM)

Definition

The OBD2 code U0584 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 software or firmware in the BCM
  • Poor or damaged wiring/connectors between the BCM and other modules
  • Short circuits or open circuits in the communication lines
  • Faulty or malfunctioning other control modules
  • Electrical interference or noise in the communication network
  • Low battery voltage or power supply issues
  • Grounding issues in the vehicle's electrical system

Common misdiagnoses

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

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 and connectors related to the Body Control Module (BCM) 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 BCM

    Functionality: Verify that the BCM is functioning correctly. This may involve checking for proper operation of the BCM's outputs and inputs

  5. 5. Software Updates

    Check if there are any software updates available for the BCM. Sometimes, manufacturers release updates to fix known issues

  6. 6. Inspect Related Modules

    Since the BCM communicates with other modules, check for any issues with those modules (e.g., Instrument Cluster, Engine Control Module, etc.) that may be causing communication problems

  7. 7. Test the Communication Network

    CAN Bus: Use a scan tool to monitor the CAN bus for proper communication. Look for any interruptions or faults in the data transmission

  8. 8. Resistance and Voltage

    Measure the resistance and voltage on the CAN bus lines to ensure they are within specifications

  9. 9. Check for Ground Issues

    Ensure that the BCM and related modules have a good ground connection. Poor grounding can lead to communication errors

  10. 10. 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

  11. 11. Consult Technical Service Bulletins (TSBs)

    Check for any TSBs related to the specific make and model of the vehicle. Manufacturers may have documented solutions for common issues related to the BCM

  12. 12. 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 to the vehicle as required

  13. 13. Seek Professional Help

    If you are unable to resolve the issue, it may be best to consult a professional mechanic or dealership with experience in diagnosing and repairing BCM-related issues.Conclusion Troubleshooting OBD-II code U0584 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