What Does B1962 Mean?
This code indicates the Body Control Module (BCM) or seat module has detected an incorrect voltage signal or lack of feedback from the potentiometer that monitors the power seat's horizontal (fore/aft) position. The potentiometer provides position feedback to the control module to indicate where the seat is located on its track. When the feedback signal is out of range, erratic, or missing, the module sets this fault code and may disable power seat functionality.
Common Causes
45%
Faulty or worn seat track position potentiometer with internal resistance or wiper contact issues
30%
Damaged, corroded, or loose wiring harness and connector between seat module and potentiometer
15%
Failed seat control module or integrated seat memory module with internal circuit failure
10%
Mechanical binding or obstruction in seat track causing potentiometer misalignment or damage
Diagnostic Steps
1
Step 1: Perform visual inspection of seat track area - check for debris, obstructions, or mechanical binding that could damage potentiometer. Move seat manually through full range to verify smooth operation and listen for unusual noises.
2
Step 2: Locate seat horizontal potentiometer (typically mounted on seat track mechanism) and inspect wiring harness and connectors for corrosion, damage, bent pins, or water intrusion. Clean and secure all connections.
3
Step 3: Using a digital multimeter, backprobe the potentiometer connector with ignition on and verify reference voltage (typically 5V) and ground at potentiometer. Check signal voltage while moving seat through full range - should vary smoothly between approximately 0.5V and 4.5V without dropouts or spikes.
4
Step 4: If voltage readings are abnormal or erratic, disconnect potentiometer and measure its internal resistance while manually rotating the shaft - should show smooth resistance change (typically 1k-10k ohms range depending on manufacturer) without dead spots or jumps indicating worn contact.
5
Step 5: If potentiometer resistance is acceptable but signal is still faulty, check wiring continuity between potentiometer and seat control module, and inspect module connector for corrosion or damage.
6
Step 6: After repair, clear codes, cycle seat through full range multiple times, and verify potentiometer feedback signal is stable and code does not return during test drive with multiple seat adjustments.
Estimated Repair Cost
$150 - $650
Parts + labor, varies by vehicle and location
This code indicates the Body Control Module (BCM) or seat module has detected an incorrect voltage signal or lack of feedback from the potentiometer that monitors the power seat's horizontal (fore/aft) position. The potentiometer provides position feedback to the control module to indicate where the...
The most common cause of B1962 (Seat Horizontal Forward/Rearward Potentiometer Feedback Circuit Failure) is: Faulty or worn seat track position potentiometer with internal resistance or wiper contact issues
Typical repair costs for B1962 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 only affects power seat position memory and adjustment functionality. Repair at convenience, though seat may not move or may move unpredictably when using power controls, requiring manual positioning before each drive.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to B1962 to identify the root cause.
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Quick Info
Category
Body
System
Power Seat Control System
Difficulty
Type
Manufacturer
Recommended Tools
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