Seat Recline Forward/Backward Potentiometer Feedback Circuit Short To Battery
The seat recline motor's position sensor is sending a voltage signal that's too high, as if it's shorted directly to the vehicle's battery power. It's like a dimmer switch stuck at maximum brightness instead of varying smoothly.
The ECU monitors the potentiometer feedback voltage from the seat recline motor as it moves through its range. The sensor should output a variable voltage proportional to recline angle. A short to battery causes the voltage to remain at maximum, outside the normal operating range.
| Parameter | Normal Range | Fault Condition |
|---|---|---|
| Potentiometer feedback voltage | 0.5V to 4.5V (proportional to position) | Above 4.8V (shorted to battery ~12V) |
| Signal continuity | Continuous variable resistance change | Constant maximum voltage with no variation |
Code B1960 is a low-severity fault. Your vehicle is generally safe to drive to a workshop for diagnosis. However, do not ignore it indefinitely — low-severity codes often indicate developing problems that become expensive if neglected. Book a diagnostic appointment within 2–4 weeks. If you notice any additional symptoms (rough running, power loss, unusual smells), treat it as higher priority.
Once the fault is repaired, B1960 can be cleared using any OBD-II scanner. Connect the scanner, navigate to "Clear Codes" or "Erase DTCs," and confirm. The check engine light turns off immediately.
The code will return if the root cause was not actually fixed. The ECM re-detects the fault within 1–3 drive cycles and sets the code again.