B1954 – Seat Front Up/Down Potentiometer Feedback Circuit Failure

The ODBII code B1954 indicates a malfunction in the feedback circuit of the front seat up/down potentiometer, which is responsible for detecting the position of the seat adjustment mechanism.

The severity of ODBII code B1954 is moderate.

Common Causes For: B1953 Seat Rear Up/Down Potentiometer Feedback Circuit Short To Ground

• Faulty seat potentiometer
• Damaged wiring or connectors
• Short circuit in the feedback circuit
• Open circuit in the feedback circuit
• Corrosion or poor connections
• Malfunctioning seat control module
• Software issues in the control module
• Grounding issues in the circuit

Common misdiagnosis for B1954 Seat Front Up/Down Potentiometer Feedback Circuit Failure

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

Common Troubleshooting Steps

The OBD-II code B1954 indicates a problem with the front seat up/down potentiometer feedback circuit. This code is typically associated with issues in the seat adjustment system, particularly the electrical components that control the seat’s vertical movement. Here are some common troubleshooting steps to diagnose and potentially 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 signs of damage, such as frayed wires, corrosion, or loose connections.
• Ensure that all connectors are securely plugged in and free of dirt or debris.
• Test the Potentiometer:
• The potentiometer is responsible for sending feedback about the seat position. Use a multimeter to test the resistance of the potentiometer while moving the seat up and down. Compare the readings to the specifications in the vehicle’s service manual.
• If the potentiometer is faulty, it may need to be replaced.
• Check the Seat Motor:
• Test the seat motor to ensure it is functioning correctly. You can do this by applying direct power to the motor to see if it operates. If the motor does not work, it may need to be replaced.
• Inspect the Seat Control Module:
• If the wiring and components appear to be in good condition, the issue may lie within the seat control module. Check for any signs of damage or malfunction.
• If possible, perform a reset or reprogramming of the module according to the manufacturer’s instructions.
• Check for Ground Issues:
• Ensure that the ground connections for the seat adjustment system are secure and free of corrosion. A poor ground can lead to erratic behavior and fault codes.
• Look for Short Circuits:
• Use a multimeter to check for short circuits in the wiring. A short can cause incorrect signals to be sent to the control module.
• Consult the Service Manual:
• Refer to the vehicle’s service manual for specific diagnostic procedures and specifications related to the seat adjustment system.
• Clear the Codes and Test Drive:
• After performing repairs or replacements, clear the trouble codes using the OBD-II scanner and take the vehicle for a test drive to see if the code returns.
• Seek Professional Help:
• If the issue persists after performing these steps, it may be necessary to consult a professional mechanic or technician who has experience with automotive electrical systems. By following these troubleshooting steps, you can systematically identify and address the cause of the B1954 code.