Traction Control Motor Potentiometer Circuit Open
The traction control system can't read the position of its motor because the sensor wire is broken or disconnected, like a radio with a snapped antenna. Without this signal, the ECU can't control wheel slip during acceleration.
The ECU monitors the potentiometer voltage output from the traction control motor to determine its position. The sensor should return a variable voltage between 0.5V and 4.5V as the motor moves. An open circuit prevents any signal, causing the ECU to timeout waiting for a response.
| Parameter | Normal Range | Fault Condition |
|---|---|---|
| Potentiometer Voltage | 0.5V to 4.5V (variable) | No signal or fixed voltage (open circuit) |
| Signal Response Time | < 100ms | > 500ms or no response |
Code C1496 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, C1496 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.