Seat Driver Rear Down Switch Circuit Open
The seat's rear-down switch has a broken electrical connection, like a light switch that won't complete the circuit. The ECU can't detect when you're trying to move the seat backward.
The ECU monitors voltage signals from the driver seat rear-down switch. When the switch is pressed, it should ground the circuit and create a voltage drop that the ECU detects as a valid command. An open circuit means no voltage change is detected.
| Parameter | Normal Range | Fault Condition |
|---|---|---|
| Switch Circuit Voltage | 5V (unpressed) to 0V (pressed) | Stuck at 5V or no voltage response detected |
| Circuit Resistance | Less than 50 ohms when closed | Greater than 10,000 ohms or infinite (open) |
Code B1730 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, B1730 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.