WOMS
B code body Medium severity

B1953 Seat Rear Up/Down Potentiometer Feedback Circuit Short To Ground

The OBD2 code B1953 indicates a malfunction in the rear seat up/down potentiometer feedback circuit, specifically that there is a short to ground in the circuit, which can affect the seat's adjustment functionality

Definition

The OBD2 code B1953 indicates a malfunction in the rear seat up/down potentiometer feedback circuit, specifically that there is a short to ground in the circuit, which can affect the seat's adjustment functionality

Common causes

  • Damaged wiring or connectors in the potentiometer circuit
  • Shorted potentiometer
  • Faulty seat control module
  • Corroded or loose electrical connections
  • Water intrusion or moisture in the electrical components

Common misdiagnoses

  • Faulty seat control module
  • Wiring issues or shorts in the harness
  • Defective seat potentiometer
  • Corroded connectors
  • Incorrectly calibrated seat position sensor
  • Software or firmware issues in the vehicle's control system
  • Other related sensor failures
  • Grounding issues in the electrical system

Troubleshooting steps

  1. 1. Scan Tool Verification

    Use an OBD-II scanner to confirm the code and check for any additional codes that may provide more context about the issue

  2. 2. Visual Inspection

  3. 3. Inspect the wiring and connectors associated with the rear seat potentiometer. Look for signs of damage, fraying, corrosion, or loose connections

  4. 4. Check the potentiometer itself for any physical damage

  5. 5. Check the Potentiometer

  6. 6. Test the potentiometer with a multimeter. Measure the resistance across the potentiometer terminals while moving the seat up and down. The resistance should change smoothly without any drops to zero or spikes

  7. 7. If the potentiometer is faulty, it may need to be replaced

  8. 8. Inspect the Ground Circuit

  9. 9. Check the ground connections for the potentiometer circuit. Ensure that the ground is solid and free of corrosion

  10. 10. Use a multimeter to test for continuity between the ground wire and the vehicle's chassis

  11. 11. Check for Shorts

  12. 12. With the multimeter, check for continuity between the potentiometer signal wire and ground. If there is continuity, it indicates a short to ground

  13. 13. Inspect the wiring harness for any pinched or damaged wires that could be causing the short

  14. 14. Test the Control Module

  15. 15. If the wiring and potentiometer are in good condition, the issue may lie within the control module. Check for any software updates or known issues with the module

  16. 16. If possible, test the control module with a known good unit to see if the problem persists

  17. 17. Clear the Code

    After performing repairs, clear the code using the OBD-II scanner and take the vehicle for a test drive to see if the code returns

  18. 18. Professional Help

    If you are unable to resolve the issue after these steps, consider seeking help from a professional mechanic or an automotive technician who has experience with electrical systems. By following these steps, you should be able to diagnose and potentially fix the issue related to the B1953 code