B1964 – Seat Horizontal Forward/Rearward Potentiometer Feedback Circuit Short To Battery

The ODBII code B1964 indicates a malfunction in the seat’s horizontal forward/rearward potentiometer feedback circuit, specifically that there is a short circuit to the battery, which can affect the seat’s adjustment functionality.

The severity of ODBII code B1964 is moderate.

Common Causes For: B1963 Seat Horizontal Forward/Rearward Potentiometer Feedback Circuit Open

• Shorted wiring or connectors in the potentiometer circuit.
• Faulty seat position potentiometer.
• Corroded or damaged electrical connections.
• Malfunctioning seat control module.
• Grounding issues in the circuit.
• Incorrectly installed or damaged seat assembly.

Common misdiagnosis for B1964 Seat Horizontal Forward/Rearward Potentiometer Feedback Circuit Short To Battery

• Faulty seat control module
• Wiring issues or shorts in the harness
• Defective seat potentiometer
• Incorrectly installed or damaged seat components
• Battery or power supply issues
• Faulty connectors or terminals
• Software or calibration errors in the vehicle’s system

Common Troubleshooting Steps

When dealing with an OBD-II code B1964, which indicates a problem with the seat horizontal forward/rearward potentiometer feedback circuit (specifically a short to battery), you can follow these common troubleshooting steps:

• Verify the Code: Use an OBD-II scanner to confirm that the B1964 code is present. Clear the code and see if it returns after a short drive.
• Inspect the Wiring and Connectors:
• Check the wiring harness and connectors associated with the seat adjustment potentiometer for any signs of damage, fraying, or corrosion.
• Look for any loose connections or pinched wires that could cause a short circuit.
• Check the Potentiometer:
• Test the seat potentiometer itself for proper operation. You can do this by measuring the resistance across the potentiometer terminals while moving the seat forward and backward.
• If the potentiometer is faulty, it may need to be replaced.
• Inspect the Seat Control Module:
• If the potentiometer checks out, inspect the seat control module for any signs of damage or corrosion.
• Ensure that the module is receiving proper power and ground.
• Test for Short Circuits:
• Use a multimeter to check for continuity between the potentiometer circuit and the battery voltage. A short circuit may indicate a problem in the wiring or connectors.
• Check for any shorts to ground as well.
• Check for Ground Issues:
• Ensure that the ground connections for the seat adjustment system are secure and free of corrosion.
• A poor ground can cause erratic behavior and trigger fault codes.
• Inspect Related Components:
• If applicable, check other components in the seat adjustment system, such as relays or fuses, to ensure they are functioning correctly.
• Consult Wiring Diagrams:
• Refer to the vehicle’s wiring diagrams to understand the circuit layout and identify any other components that may be involved in the potentiometer feedback circuit.
• Perform a System Reset:
• After repairs, clear the code and perform a system reset to see if the issue persists.
• Seek Professional Help:
• If you are unable to resolve the issue after these steps, consider consulting 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 resolve the issue related to the B1964 code.