WOMS
U code network Medium severity

U0228 Lost Communication With "Door Window Motor G

The OBD2 code U0228 indicates a loss of communication with the door window motor, suggesting a problem in the communication network between the vehicle's control modules and the window motor

Definition

The OBD2 code U0228 indicates a loss of communication with the door window motor, suggesting a problem in the communication network between the vehicle's control modules and the window motor

Common causes

  • Faulty door window motor
  • Damaged wiring or connectors
  • Corroded terminals
  • Failed control module
  • Poor ground connection
  • Blown fuse
  • Intermittent electrical connection
  • Software issues or glitches in the control module

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 CAN bus system
  • Low battery voltage or poor battery connections
  • Faulty door module or control unit

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

    Visual Inspection: Check the wiring harness and connectors associated with the door window motor 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. Test the Door Window Motor

    Functionality Test: Manually test the door window motor to see if it operates correctly. You can do this by applying direct power to the motor to see if it functions

  5. 5. Resistance Check

    Measure the resistance of the motor to ensure it is within specifications

  6. 6. Check the Control Module

    Module Functionality: Ensure that the control module responsible for the door window motor is functioning properly. This may involve checking for power and ground at the module

  7. 7. Reprogramming

    In some cases, the control module may need to be reprogrammed or reset

  8. 8. Inspect the Fuses

    Check the fuses related to the door window motor and the control module. Replace any blown fuses

  9. 9. Scan for Communication Issues

    Use a scan tool to check for communication between the control module and the door window motor. If there are communication issues, it may indicate a problem with the bus system or the control module itself

  10. 10. Check for Ground Issues

    Ensure that the ground connections for the door window motor and control module are secure and free of corrosion

  11. 11. Look for Environmental Factors

    Sometimes, environmental factors such as moisture or dirt can affect the connections. Ensure that the area is clean and dry

  12. 12. Perform a System Reset

    Disconnect the battery for a few minutes to reset the vehicle’s computer systems. Reconnect and see if the code reappears

  13. 13. Consult Technical Service Bulletins (TSBs)

    Check for any TSBs related to the specific make and model of your vehicle. Manufacturers may have issued guidance on common issues related to the door window motor.1

  14. 14. Seek Professional Help

    If the issue persists after performing these steps, it may be best to consult a professional mechanic or technician who has experience with your vehicle’s specific systems. By following these steps, you should be able to identify the cause of the U0228 code and take appropriate action to resolve the issue