VSC/TRAC Actuator Motor Potentiometer Circuit Open
The C1496 code indicates that the Skid Control ECU has detected an open circuit in the VSC/TRAC actuator motor potentiometer. This potentiometer provides feedback on the motor's position (which controls the pressure control valves) to the ECU. Without this signal, the ECU cannot verify the actual actuator position, disabling the Vehicle Stability Control (VSC) and Traction Control (TRAC) systems.
1. Commonly Affected Makes
2. Most Common Causes
- Open circuit in the VSC actuator motor potentiometer wiring harness
- Faulty internal potentiometer in the VSC actuator motor
- Loose, corroded, or damaged VSC actuator connector
- Internal failure of the Skid Control ECU
3. Symptoms You Will Notice
- VSC and TRAC warning lights illuminated on the dashboard
- VSC and TRAC systems inoperative
- Possible reduced vehicle stability and traction
4. Step-by-Step Diagnosis
Scan for additional codes and verify C1496 is present
Visually inspect the VSC actuator connector and wiring for damage, corrosion, or loose connections
Measure resistance of the potentiometer circuit at the actuator connector and compare to specifications
If wiring and connector are okay, test the actuator motor potentiometer internally
If all else fails, check for Skid Control ECU internal fault
5. Frequently Asked Questions
Is it safe to drive?▼
Driving without VSC and TRAC is not recommended, especially in adverse conditions, as vehicle stability and traction control are disabled. Have the issue diagnosed and repaired promptly.
How much does it cost to fix?▼
Repair costs typically range from $200 to $800, depending on whether the issue is a wiring repair, connector replacement, actuator replacement, or ECU replacement.