WOMS
U code network Medium severity

U1422 Invalid Data Received from Vehicle Dynamics Control Module

The OBD2 code U1422 indicates that the vehicle's control module has received invalid or erroneous data from the Vehicle Dynamics Control Module, which may affect the vehicle's stability and handling systems

Definition

The OBD2 code U1422 indicates that the vehicle's control module has received invalid or erroneous 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)
  • Corrupted or damaged wiring harness
  • Poor electrical connections or corroded connectors
  • Faulty sensors related to vehicle dynamics
  • Software issues or bugs in the VDCM
  • Communication issues between modules
  • Low battery voltage or power supply issues
  • Faulty or malfunctioning ABS module

Common misdiagnoses

  • Faulty ABS module
  • Defective wheel speed sensors
  • Malfunctioning traction control system
  • Issues with the powertrain control module (PCM)
  • Wiring or connector problems
  • Faulty vehicle dynamics control module (VDCM)
  • Incorrect tire sizes or pressures
  • Software or calibration issues in the control modules

Troubleshooting steps

  1. 1. Check for Additional Codes

    Use an OBD-II scanner to check for any other trouble codes that may be present. This can provide more context and help identify related issues

  2. 2. Inspect Wiring and Connectors

  3. 3. Visually inspect the wiring and connectors between the ECM and the VDCM for any signs of damage, corrosion, or loose connections

  4. 4. Ensure that all connectors are securely plugged in and that there are no bent pins

  5. 5. Check for Ground Issues

  6. 6. Ensure that the ground connections for both the ECM and VDCM are secure and free of corrosion

  7. 7. A poor ground can lead to communication issues between modules

  8. 8. Test the Vehicle Dynamics Control Module

  9. 9. If possible, test the VDCM to ensure it is functioning correctly. This may involve using a scan tool to check for live data and see if the module is responding as expected

  10. 10. If the VDCM is faulty, it may need to be repaired or replaced

  11. 11. Inspect Related Sensors

  12. 12. Check any sensors that provide data to the VDCM, such as wheel speed sensors, yaw rate sensors, or steering angle sensors. Ensure they are functioning correctly and that their wiring is intact

  13. 13. Look for any signs of physical damage or wear

  14. 14. Check for Software Updates

  15. 15. Sometimes, manufacturers release software updates for the ECM or VDCM that can resolve communication issues. Check with the manufacturer or a dealership to see if any updates are available

  16. 16. Clear Codes and Test Drive

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

  18. 18. Perform a Network Test

  19. 19. If the issue persists, consider performing a network test to check for communication issues between modules. This may require specialized diagnostic equipment

  20. 20. Consult Technical Service Bulletins (TSBs)

  21. 21. Check for any TSBs related to the U1422 code for your specific vehicle make and model. Manufacturers may have documented common issues and solutions

  22. 22. Seek Professional Help

  23. 23. If you are unable to resolve the issue after these steps, it may be best to consult a professional mechanic or dealership with experience in diagnosing and repairing communication issues in vehicle networks. By following these steps, you should be able to identify the root cause of the U1422 code and take appropriate action to resolve it