What Does B1765 Mean?
This code indicates that the Body Control Module (BCM) or Seat Control Module has detected an electrical fault in the driver's seat forward movement circuit. The control module has identified either an open circuit, short circuit, excessive resistance, or loss of communication in the wiring or motor that moves the driver's seat forward. This prevents the power seat from moving forward when commanded by the seat switch.
Common Causes
35%
Faulty seat track motor or internal motor failure
30%
Damaged wiring harness or connector between seat switch and motor
20%
Failed seat position switch or control switch
10%
Corroded or loose ground connection at seat frame
5%
Faulty seat control module or BCM internal relay
Diagnostic Steps
1
Step 1: Perform visual inspection of the driver's seat wiring harness under the seat for chafing, pinching, or damage caused by seat movement. Check all connectors for corrosion, backed-out pins, or loose connections at the seat motor and switch.
2
Step 2: Using a multimeter, test for battery voltage at the seat motor connector with the seat switch activated in the forward position. Should read 12-14V on the forward circuit wire when switch is pressed.
3
Step 3: If voltage is present, disconnect the seat motor and perform resistance test across motor terminals. A properly functioning motor should show 3-8 ohms resistance. Infinite resistance indicates open motor windings.
4
Step 4: If no voltage is present at motor, backprobe the seat switch connector with multimeter while activating forward switch. Verify voltage supply to switch and continuity through switch to motor circuit when activated.
5
Step 5: Test ground circuit integrity by checking voltage drop from motor ground to battery negative with motor under load. Should be less than 0.5V. High voltage drop indicates poor ground connection.
6
Step 6: If all circuits test normal, suspect faulty seat control module. Verify module power and ground supplies are present, then replace module if all other components test satisfactory.
Estimated Repair Cost
$150 - $650
Parts + labor, varies by vehicle and location
This code indicates that the Body Control Module (BCM) or Seat Control Module has detected an electrical fault in the driver's seat forward movement circuit. The control module has identified either an open circuit, short circuit, excessive resistance, or loss of communication in the wiring or motor...
The most common cause of B1765 (Seat Driver Forward Circuit Failure) is: Faulty seat track motor or internal motor failure
Typical repair costs for B1765 range from $150 to $650, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Safe to continue driving as this does not affect vehicle operation or safety systems. This is a convenience feature failure only, though it may prevent proper seating position adjustment which could affect driver comfort and optimal control of the vehicle.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to B1765 to identify the root cause.
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Quick Info
Category
Body
System
Body Comfort and Convenience System
Difficulty
Type
Manufacturer
Recommended Tools
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