What Does B1769 Mean?
This diagnostic trouble code indicates that the Body Control Module (BCM) or Seat Control Module has detected an electrical fault in the driver's seat backward movement circuit. The control module has identified either an open circuit, short circuit, excessive resistance, or lack of expected feedback signal when the seat backward function is commanded or activated. This affects the power seat adjustment system's ability to move the driver's seat rearward.
Common Causes
35%
Faulty seat motor or internal motor failure in the backward movement mechanism
30%
Damaged wiring harness or connector to seat motor with broken wires, corrosion, or poor connections
20%
Failed seat switch or control module internal to the seat adjuster panel
10%
Faulty seat control module or Body Control Module software/hardware issue
5%
Mechanical binding or obstruction in seat track preventing motor operation and causing overcurrent
Diagnostic Steps
1
Step 1: Perform visual inspection of the driver's seat wiring harness and connectors beneath the seat, checking for visible damage, corrosion, loose connections, or pinched wires. Disconnect and inspect connector terminals for bent pins or corrosion.
2
Step 2: Using a digital multimeter, check for battery voltage (typically 12V) at the seat motor connector during backward switch activation. Verify ground circuit continuity (should read less than 0.5 ohms to chassis ground).
3
Step 3: Disconnect the seat motor and perform a direct power test by applying 12V power and ground directly to the motor terminals to verify motor operation. Motor should run smoothly without binding or excessive noise.
4
Step 4: Test the seat switch by checking continuity and resistance across switch terminals in various positions using a multimeter. Expected resistance should be less than 5 ohms when activated, infinite when not pressed.
5
Step 5: Check for mechanical binding by manually attempting to move the seat backward while observing for obstructions, debris in tracks, or damaged seat rail components.
6
Step 6: Clear the DTC code, cycle the seat backward function multiple times, and verify code does not return. If code returns immediately, suspect control module; if intermittent, suspect wiring or connector issue.
Estimated Repair Cost
$150 - $800
Parts + labor, varies by vehicle and location
This diagnostic trouble code indicates that the Body Control Module (BCM) or Seat Control Module has detected an electrical fault in the driver's seat backward movement circuit. The control module has identified either an open circuit, short circuit, excessive resistance, or lack of expected feedbac...
The most common cause of B1769 (Seat Driver Backward Circuit Failure) is: Faulty seat motor or internal motor failure in the backward movement mechanism
Typical repair costs for B1769 range from $150 to $800, depending on the vehicle, location, and whether you do it yourself or go to a shop.
This code does not affect vehicle drivability or safety systems and the vehicle is safe to drive. The only impact is the inability to adjust the driver's seat position rearward using the power seat controls, which may affect driver comfort but does not present an immediate safety concern.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to B1769 to identify the root cause.
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Quick Info
Category
Body
System
Power Seat Adjustment System
Difficulty
Type
Manufacturer
Recommended Tools
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