What Does C1496 Mean?
This code specifically indicates an open circuit in the traction control motor potentiometer circuit. The ABS/TC module detects no signal return from the position sensor, meaning the feedback loop is completely broken. This is typically caused by a physical disconnection rather than sensor degradation, and often results from a connector issue or broken wire rather than a failed potentiometer element.
Common Causes
35%
Disconnected or unseated potentiometer connector at the TC motor assembly
30%
Broken potentiometer signal wire from vibration fatigue at a connector exit point or harness clamp
20%
Potentiometer internal wiper arm broken or lifted off the resistive element, creating a permanent open
15%
Corroded terminal at the ABS module connector on the potentiometer input pin
Diagnostic Steps
1
Step 1: Verify the potentiometer connector at the TC motor is fully seated with the lock tab engaged. Disconnect and inspect for backed-out pins, corroded terminals, or damaged seals.
2
Step 2: Measure continuity on the potentiometer signal wire from the motor connector to the ABS module connector. An open reading confirms a broken wire. Also check the reference and ground wires for continuity.
3
Step 3: If harness continuity is good, measure the potentiometer itself. With the connector disconnected, measure resistance between the wiper (signal) pin and each end pin while rotating the actuator. If the wiper reads OL in all positions, the potentiometer element is open internally.
4
Step 4: Wiggle-test the harness while monitoring continuity to find intermittent opens. Focus on connector exits, harness flex points, and areas where the harness is clamped to vibrating components.
5
Step 5: Repair any broken wires with solder-and-shrink splices. If the potentiometer is faulty, replace the TC motor assembly. Perform motor calibration after any replacement and verify the position feedback reads correctly through the full range of travel.
Estimated Repair Cost
$50 - $600
Parts + labor, varies by vehicle and location
This code specifically indicates an open circuit in the traction control motor potentiometer circuit. The ABS/TC module detects no signal return from the position sensor, meaning the feedback loop is completely broken. This is typically caused by a physical disconnection rather than sensor degradati...
The most common cause of C1496 (Traction Control Motor Potentiometer Circuit Open) is: Disconnected or unseated potentiometer connector at the TC motor assembly
Typical repair costs for C1496 range from $50 to $600, depending on the vehicle, location, and whether you do it yourself or go to a shop.
An open potentiometer circuit means the module has no motor position feedback. Traction control is disabled to prevent uncontrolled motor operation. The vehicle has no electronic wheel spin reduction during acceleration on slippery surfaces.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to C1496 to identify the root cause.
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Quick Info
Category
Chassis
System
Traction Control System
Difficulty
Type
Manufacturer
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