B1769 – Seat Driver Backward Circuit Failure

The ODBII code B1769 indicates a malfunction in the driver seat’s backward movement circuit, suggesting a failure in the electrical system or components responsible for moving the seat backward.

The severity of ODBII code B1769 is generally considered moderate.

Common Causes For: B1768 Seat Driver Forward Circuit Short To Ground

• Faulty seat position sensor
• Damaged wiring or connectors
• Malfunctioning seat control module
• Short circuit in the circuit
• Open circuit in the circuit
• Corroded connectors
• Faulty power supply to the seat motor
• Defective seat motor

Common misdiagnosis for B1769 Seat Driver Backward Circuit Failure

• Faulty seat motor
• Wiring issues or shorts
• Malfunctioning seat switch
• Body control module (BCM) failure
• Poor ground connection
• Faulty connectors or terminals
• Issues with the power supply to the seat system

Common Troubleshooting Steps

The OBD-II code B1769 indicates a “Seat Driver Backward Circuit Failure.” This code is typically related to the power seat system in vehicles, specifically the circuit that controls the backward movement of the driver’s seat. Here are some common troubleshooting steps to diagnose and potentially resolve this 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 Seat Wiring and Connectors:
• Visually inspect the wiring harness and connectors associated with the driver’s seat. Look for any signs of damage, fraying, or corrosion.
• Ensure that all connectors are securely plugged in and free of dirt or debris.
• Test the Seat Switch:
• The seat switch controls the movement of the seat. Test the switch for continuity using a multimeter. If the switch is faulty, it may need to be replaced.
• Check the Power Seat Motor:
• Test the power 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 it does not work, the motor may need to be replaced.
• Inspect the Seat Control Module:
• If your vehicle is equipped with a seat control module, check for any faults in the module. This may require specialized diagnostic equipment to read the module’s data.
• Examine the Fuses:
• Check the fuses related to the power seat system. A blown fuse can cause the seat to malfunction. Replace any blown fuses and retest the system.
• Look for Ground Issues:
• Ensure that the ground connections for the seat motor and control module are secure and free of corrosion. Poor ground connections can lead to circuit failures.
• Perform a Visual Inspection of the Seat Tracks:
• Ensure that the seat tracks are not obstructed or jammed, which could prevent the seat from moving backward.
• Clear the Code and Test Drive:
• After performing the necessary repairs, clear the trouble code using the OBD-II scanner and take the vehicle for a test drive to see if the code returns.
• Consult a Professional:
• If the issue persists after performing these steps, it may be best to consult a professional mechanic or technician who has experience with automotive electrical systems. By following these troubleshooting steps, you should be able to identify and resolve the issue related to the B1769 code.