WOMS
U code network Medium severity

U0222 Lost Communication With "Door Window Motor A

The OBD2 code U0222 indicates a loss of communication with the "Door Window Motor A," suggesting that the vehicle's control module is unable to receive data from the window motor's module

Definition

The OBD2 code U0222 indicates a loss of communication with the "Door Window Motor A," suggesting that the vehicle's control module is unable to receive data from the window motor's module

Common causes

  • Faulty door window motor
  • Damaged wiring or connectors
  • Poor ground connection
  • Failed control module
  • Corroded terminals
  • Software issues or glitches
  • Intermittent electrical connection
  • Faulty body control module (BCM)

Common misdiagnoses

  • Faulty door window motor
  • Wiring issues or shorts in the door harness
  • Malfunctioning body control module (BCM)
  • Defective power window switch
  • Issues with the vehicle's central locking system
  • Low battery voltage or poor battery connections
  • Faulty connectors or terminals in the door assembly

Troubleshooting steps

  1. 1. Check for Additional Codes

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

  2. 2. Inspect Wiring and Connectors

  3. 3. Visually inspect the wiring harness and connectors associated with the door window motor. Look for signs of damage, corrosion, or loose connections

  4. 4. Ensure that all connectors are securely plugged in and that there are no broken wires

  5. 5. Test the Door Window Motor

  6. 6. If possible, test the door window motor directly to ensure it is functioning properly. You can do this by applying power directly to the motor to see if it operates

  7. 7. If the motor does not work when powered directly, it may need to be replaced

  8. 8. Check the Control Module

  9. 9. Verify that the control module (often the Body Control Module or BCM) is functioning correctly. If the module is faulty, it may not be able to communicate with the window motor

  10. 10. Check for any software updates or reprogramming that may be needed for the control module

  11. 11. Inspect Fuses

  12. 12. Check the fuses related to the door window motor and the control module. A blown fuse can interrupt communication and operation

  13. 13. Test Communication Lines

  14. 14. Use a multimeter or an oscilloscope to test the communication lines between the control module and the door window motor. Look for proper voltage and signal integrity

  15. 15. If there are issues with the communication lines, you may need to repair or replace the wiring

  16. 16. Perform a Reset

  17. 17. Sometimes, clearing the trouble codes and resetting the vehicle's computer can resolve communication issues. After clearing the codes, take the vehicle for a test drive to see if the code returns

  18. 18. Consult Technical Service Bulletins (TSBs)

  19. 19. Check for any TSBs related to your vehicle's make and model that may address known issues with the door window motor or communication problems

  20. 20. Seek Professional Help

  21. 21. If you are unable to diagnose or resolve the issue after performing these steps, it may be best to consult a professional mechanic or technician who has experience with automotive electrical systems. By following these troubleshooting steps, you should be able to identify the cause of the U0222 code and take appropriate action to resolve the issue