WOMS
B code body Medium severity

B2155 Seat Horizontal Motor Position Out of Range

The OBD2 code B2155 indicates that the seat horizontal motor position is outside the expected range of movement, suggesting a malfunction in the seat adjustment system

Definition

The OBD2 code B2155 indicates that the seat horizontal motor position is outside the expected range of movement, suggesting a malfunction in the seat adjustment system

Common causes

  • Faulty seat horizontal motor
  • Damaged wiring or connectors
  • Malfunctioning seat position sensor
  • Issues with the body control module (BCM)
  • Electrical short or open circuit
  • Corrosion in connectors or terminals
  • Software or calibration issues in the vehicle's control module
  • Mechanical obstruction in the seat adjustment mechanism

Common misdiagnoses

  • Faulty seat motor
  • Wiring issues
  • Faulty seat position sensor
  • Control module malfunction
  • Software glitches in the vehicle's computer system
  • Poor ground connections
  • Issues with the power supply to the seat motor

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 multiple issues

  2. 2. Inspect the Seat Motor

  3. 3. Check the seat motor for any visible damage or signs of wear

  4. 4. Ensure that the motor is securely mounted and not loose

  5. 5. Test the Seat Motor

  6. 6. Use a multimeter to test the motor for continuity. If the motor is not functioning, it may need to be replaced

  7. 7. Apply direct power to the motor to see if it operates. If it does not, the motor may be faulty

  8. 8. Check Wiring and Connectors

  9. 9. Inspect the wiring harness and connectors leading to the seat motor for any signs of damage, corrosion, or loose connections

  10. 10. Repair or replace any damaged wiring or connectors

  11. 11. Inspect the Seat Position Sensor

  12. 12. The seat position sensor may be malfunctioning. Check its wiring and connections

  13. 13. If necessary, test the sensor for proper operation and replace it if it is faulty

  14. 14. Check for Obstructions

  15. 15. Ensure that there are no obstructions preventing the seat from moving to its desired position. This could include debris or foreign objects under the seat

  16. 16. Reset the System

  17. 17. After performing any repairs, clear the trouble codes using the OBD-II scanner and see if the code returns after a test drive

  18. 18. Consult the Vehicle Manual

  19. 19. Refer to the vehicle’s service manual for specific diagnostic procedures related to the seat adjustment system

  20. 20. Professional Diagnosis

  21. 21. If the issue persists after performing the above steps, consider seeking help from a professional mechanic or an automotive technician who specializes in electrical systems. By following these steps, you should be able to identify and potentially resolve the issue related to the B2155 code