Seat Driver Forward Switch Circuit Failure
The driver's seat forward/backward adjustment switch isn't communicating properly with the car's computer. It's like a light switch that's broken or loose, so the system can't tell if you're trying to move the seat.
The body control module monitors the voltage signal from the driver seat forward switch when pressed. It expects a specific voltage change (typically 0-5V) when the switch is activated. If the signal is absent, unstable, or shorted, the ECU logs a fault.
| Parameter | Normal Range | Fault Condition |
|---|---|---|
| Switch voltage signal | 0V idle, 5V when pressed | No signal or stuck voltage |
| Circuit resistance | 0-500 ohms when activated | Open circuit or >10k ohms |
Code B1717 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, B1717 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.