B1962 – Seat Horizontal Forward/Rearward Potentiometer Feedback Circuit Failure

The ODBII code B1962 indicates a failure in the feedback circuit of the seat horizontal forward/rearward potentiometer, which is responsible for detecting the position of the seat adjustment mechanism.

The severity of ODBII code B1962 is moderate.

Common Causes For: B1961 Seat Recline Forward/Backward Potentiometer Feedback Circuit Short To Ground

• Faulty seat position potentiometer
• Damaged wiring or connectors in the feedback circuit
• Short circuit or open circuit in the potentiometer circuit
• Corrosion or poor connections at the potentiometer or related connectors
• Malfunctioning seat control module
• Software issues in the vehicle’s control system
• Mechanical obstruction or damage to the seat adjustment mechanism

Common misdiagnosis for B1962 Seat Horizontal Forward/Rearward Potentiometer Feedback Circuit Failure

• Faulty seat motor
• Wiring issues or shorts
• Malfunctioning seat control module
• Incorrectly calibrated seat position sensors
• Faulty connectors or terminals
• Battery or power supply issues
• Software or firmware glitches in the vehicle’s control system

Common Troubleshooting Steps

The OBD-II code B1962 indicates a problem with the seat horizontal forward/rearward potentiometer feedback circuit. This code is typically associated with vehicles that have power seats equipped with position sensors. Here are some common troubleshooting steps to diagnose and resolve the issue:

• 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.
• Inspect the Wiring and Connectors: Visually inspect the wiring harness and connectors associated with the seat adjustment system. Look for:
• Damaged, frayed, or corroded wires.
• Loose or disconnected connectors.
• Signs of moisture or dirt that could affect connections.
• Test the Potentiometer: The potentiometer is responsible for sending position feedback to the vehicle’s control module. Use a multimeter to:
• Measure the resistance across the potentiometer terminals while moving the seat. The resistance should change smoothly without any dead spots.
• Check for continuity in the potentiometer circuit.
• Check the Seat Control Module: If the potentiometer appears to be functioning correctly, the issue may lie with the seat control module. Check for:
• Proper power and ground to the module.
• Any signs of damage or corrosion on the module itself.
• Ensure that the module is properly communicating with the vehicle’s network.
• Inspect the Seat Mechanism: Ensure that the seat mechanism is not obstructed or jammed. Sometimes physical obstructions can prevent the seat from moving properly, leading to feedback errors.
• Clear the Codes and Test Drive: After performing the above checks and repairs, clear the trouble codes using the OBD-II scanner. Take the vehicle for a test drive to see if the code returns.
• Consult Service Manual: If the issue persists, refer to the vehicle’s service manual for specific diagnostic procedures related to the seat adjustment system. This may include specific tests or procedures unique to your vehicle model.
• Seek Professional Help: If you are unable to resolve the issue after following these steps, it may be best to consult a professional mechanic or an automotive technician who specializes in electrical systems. By following these troubleshooting steps, you should be able to identify and resolve the issue related to the B1962 code.