WOMS
B code body Medium severity

B2220 Window Driver Rear Current Feedback Exceeded

The OBD2 code B2220 indicates that the current feedback from the rear window driver motor has exceeded the expected range, suggesting a potential issue with the motor, wiring, or control module

Definition

The OBD2 code B2220 indicates that the current feedback from the rear window driver motor has exceeded the expected range, suggesting a potential issue with the motor, wiring, or control module

Common causes

  • Faulty window motor
  • Damaged wiring or connectors
  • Short circuit in the window circuit
  • Stuck or obstructed window mechanism
  • Malfunctioning window switch
  • Defective body control module (BCM)

Common misdiagnoses

  • Faulty window motor
  • Damaged window regulator
  • Wiring issues or shorts
  • Faulty body control module (BCM)
  • Incorrectly installed window components
  • Bad ground connections
  • Malfunctioning switch or control panel
  • Battery or charging system problems

Troubleshooting steps

  1. 1. Visual Inspection

  2. 2. Check the wiring harness and connectors related to the rear window motor for any signs of damage, corrosion, or loose connections

  3. 3. Inspect the window regulator and motor for any physical damage or obstructions

  4. 4. Check the Window Motor

  5. 5. Test the rear window motor by applying direct battery voltage to it. If the motor does not operate, it may be faulty and need replacement

  6. 6. If the motor operates normally when powered directly, the issue may lie elsewhere in the system

  7. 7. Inspect the Window Switch

  8. 8. Test the window switch for proper operation. A faulty switch can cause incorrect signals to be sent to the motor

  9. 9. Use a multimeter to check for continuity in the switch when pressed

  10. 10. Check for Short Circuits

  11. 11. Inspect the wiring for any short circuits that could cause excessive current draw. Look for frayed wires or damaged insulation

  12. 12. Scan for Additional Codes

  13. 13. Use an OBD-II scanner to check for any additional trouble codes that may provide more context to the issue. Other codes may indicate related problems

  14. 14. Test the Power Supply

  15. 15. Verify that the power supply to the window motor is within specifications. Check the voltage at the motor connector while operating the switch

  16. 16. Ensure that the ground connection is solid and free of corrosion

  17. 17. Inspect the Window Regulator

  18. 18. Check the window regulator for binding or mechanical issues that could cause the motor to draw excessive current

  19. 19. Ensure that the window moves freely up and down without obstruction

  20. 20. Check for Software Updates

  21. 21. In some cases, a software update may be available for the vehicle's control modules that could resolve the issue

  22. 22. Consult Technical Service Bulletins (TSBs)

  23. 23. Look for any TSBs related to the specific make and model of the vehicle that may address known issues with the window system

  24. 24. Professional Diagnosis

  25. 25. If the issue persists after performing the above steps, consider seeking assistance from a professional mechanic or automotive technician who can perform more advanced diagnostics. By following these steps, you should be able to identify the root cause of the B2220 code and take appropriate action to resolve the issue