WOMS
B code body Medium severity

B2354 Driver Mirror Horizontal / Vertical Feedback Potentiometer Circuit Open

The OBD2 code B2354 indicates a malfunction in the driver’s side mirror adjustment system, specifically that the feedback potentiometer circuit for horizontal and vertical movement is open, meaning there is a break or...

Definition

The OBD2 code B2354 indicates a malfunction in the driver’s side mirror adjustment system, specifically that the feedback potentiometer circuit for horizontal and vertical movement is open, meaning there is a break or disconnection in the circuit that measures the position of the mirror

Common causes

  • Faulty driver mirror assembly
  • Open circuit in wiring harness
  • Damaged or corroded connectors
  • Failed feedback potentiometer
  • Short circuit in the circuit
  • Poor ground connection
  • Faulty body control module (BCM)

Common misdiagnoses

  • Faulty driver mirror assembly
  • Bad wiring or connectors
  • Malfunctioning body control module (BCM)
  • Incorrectly calibrated mirror position
  • Issues with the power supply to the mirror
  • Faulty switch or control module for mirror adjustment
  • Software or programming errors in the vehicle's system

Troubleshooting steps

  1. 1. Check the Code and Freeze Frame Data

    Use an OBD-II scanner to confirm the code B2354 is present

  2. 2. Review freeze frame data to understand the conditions under which the code was set

  3. 3. Visual Inspection

    Inspect the wiring and connectors associated with the driver’s side mirror. Look for

  4. 4. Damaged or frayed wires

  5. 5. Corroded or loose connectors

  6. 6. Signs of moisture or dirt that could affect connections

  7. 7. Test the Potentiometer

    The feedback potentiometer is typically part of the mirror assembly. You can test it by

  8. 8. Disconnecting the mirror connector

  9. 9. Using a multimeter to measure resistance across the potentiometer terminals while moving the mirror. The resistance should change smoothly as the mirror is adjusted

  10. 10. If the resistance is not changing or is open, the potentiometer may be faulty and needs replacement

  11. 11. Check for Short Circuits

    Inspect the wiring for any short circuits that could cause an open circuit condition

  12. 12. Use a multimeter to check for continuity in the wiring harness leading to the mirror

  13. 13. Inspect the Mirror Control Module

    If applicable, check the mirror control module for faults. This may involve

  14. 14. Testing the module for proper operation

  15. 15. Checking for any additional codes that may indicate a problem with the module itself

  16. 16. Check Power and Ground

    Ensure that the mirror is receiving proper power and ground

  17. 17. Use a multimeter to check for voltage at the mirror connector

  18. 18. Verify that the ground connection is solid and free of corrosion

  19. 19. Clear the Code and Test Drive

    After performing repairs or replacements, clear the code using the OBD-II scanner

  20. 20. Take the vehicle for a test drive to see if the code returns

  21. 21. Seek Professional Help

    If you are unable to resolve the issue, consider seeking help from a professional mechanic or automotive technician who has experience with electrical systems. By following these steps, you should be able to diagnose and potentially resolve the issue related to the B2354 code