Left Rear Center Sensor Circuit Fault
Your vehicle's left rear center sensor (typically a suspension height or load sensor) isn't sending a proper signal to the computer. It's like a broken speedometer that can't tell the dashboard how fast you're going.
The ECU monitors the left rear center sensor's voltage signal to detect suspension height, load, or acceleration. The signal should vary within a specific range as suspension compresses and extends. If voltage is out of range, disconnected, or shorted, the ECU cannot properly adjust brake pressure distribution and stability control.
| Parameter | Normal Range | Fault Condition |
|---|---|---|
| Sensor voltage | 0.5–4.5V (varies by sensor type) | <0.2V or >4.8V, or no signal detected |
| Signal continuity | Continuous, smooth transitions | Intermittent dropouts or stuck values |
Code C1707 is classified as a serious fault. If your check engine light is flashing — not just steady — pull over safely and do not continue driving. A flashing CEL indicates an active misfire or critical failure that can cause catalytic converter damage within minutes or permanent engine harm within miles. Contact a certified mechanic immediately. Do not attempt roadside repairs on high-severity codes unless you are trained to do so.
Once the fault is repaired, C1707 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.