B2355: Passenger Mirror Horizontal / Vertical Feedback Potentiometer Circuit Open

Definition

The OBD2 code B2355 indicates a malfunction in the passenger mirror's horizontal or vertical feedback potentiometer circuit, specifically that the circuit is open, meaning there is a break or disconnection in the electrical path affecting the mirror's positioning feedback

Common causes

Faulty passenger mirror feedback potentiometer
Open circuit in wiring harness
Corroded or damaged connectors
Short circuit in wiring
Faulty body control module (BCM)
Poor ground connection
Broken or damaged mirror assembly

Common misdiagnoses

Faulty passenger side mirror motor
Wiring issues or shorts in the mirror circuit
Defective body control module (BCM)
Malfunctioning driver side mirror switch
Incorrectly calibrated or installed mirror assembly
Issues with the vehicle's electrical system or grounds
Faulty connectors or terminals related to the mirror circuit

Troubleshooting steps

1. Check for Additional Codes

Before diving into repairs, check if there are any other related trouble codes. This can provide more context for the issue
2. Inspect the Wiring and Connectors
3. Visually inspect the wiring harness and connectors associated with the passenger side mirror. Look for any signs of damage, such as fraying, corrosion, or disconnection
4. Ensure that all connectors are securely plugged in and free of dirt or debris
5. Test the Potentiometer
6. The potentiometer is responsible for providing feedback on the mirror's position. Use a multimeter to test the resistance of the potentiometer. Compare the readings to the specifications in the vehicle's service manual
7. If the potentiometer is faulty, it may need to be replaced
8. Check the Mirror Assembly
9. If the potentiometer tests good, inspect the entire mirror assembly for any mechanical issues that could prevent it from moving properly
10. Ensure that the mirror can move freely without obstruction
11. Inspect the Control Module
12. The issue may also lie within the control module that manages the mirror functions. Check for any signs of damage or malfunction
13. If possible, perform a reset or reprogramming of the control module
14. Test the Mirror Adjustment Switch
15. The switch used to adjust the mirror may also be faulty. Test the switch for continuity and proper operation
16. If the switch is defective, it may need to be replaced
17. Check for Ground Issues
18. Ensure that the ground connections for the mirror and its components are secure and free of corrosion. A poor ground can lead to circuit issues
19. Perform a System Reset
20. After addressing any issues found, clear the trouble codes using an OBD-II scanner and take the vehicle for a test drive to see if the code returns
21. Consult the Service Manual
22. If the problem persists, refer to the vehicle's service manual for specific diagnostic procedures related to the B2355 code
23. Seek Professional Help
24. If you are unable to resolve the issue after these steps, it may be best to consult a professional mechanic or technician who has experience with your specific vehicle make and model. By following these steps, you should be able to diagnose and potentially resolve the issue related to the B2355 code

Definition

Common causes

Common misdiagnoses

Troubleshooting steps

1. Check for Additional Codes

2. Inspect the Wiring and Connectors

3. Visually inspect the wiring harness and connectors associated with the passenger side mirror. Look for any signs of damage, such as fraying, corrosion, or disconnection

4. Ensure that all connectors are securely plugged in and free of dirt or debris

5. Test the Potentiometer

6. The potentiometer is responsible for providing feedback on the mirror's position. Use a multimeter to test the resistance of the potentiometer. Compare the readings to the specifications in the vehicle's service manual

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

8. Check the Mirror Assembly

9. If the potentiometer tests good, inspect the entire mirror assembly for any mechanical issues that could prevent it from moving properly

10. Ensure that the mirror can move freely without obstruction

11. Inspect the Control Module

12. The issue may also lie within the control module that manages the mirror functions. Check for any signs of damage or malfunction

13. If possible, perform a reset or reprogramming of the control module

14. Test the Mirror Adjustment Switch

15. The switch used to adjust the mirror may also be faulty. Test the switch for continuity and proper operation

16. If the switch is defective, it may need to be replaced

17. Check for Ground Issues

18. Ensure that the ground connections for the mirror and its components are secure and free of corrosion. A poor ground can lead to circuit issues

19. Perform a System Reset

20. After addressing any issues found, clear the trouble codes using an OBD-II scanner and take the vehicle for a test drive to see if the code returns

21. Consult the Service Manual

22. If the problem persists, refer to the vehicle's service manual for specific diagnostic procedures related to the B2355 code

23. Seek Professional Help