C0135 moderate

Steering Angle Sensor Circuit Range/Performance

The C0135 code means the vehicle's onboard diagnostic system has detected: Steering Angle Sensor Circuit Range/Performance. This is a moderate severity code.

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Keep driving?
Yes, but fix soon
DIY difficulty
moderate
Estimated cost
$50 - $400 (parts and labor)
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Common Symptoms

  • ESC or stability control light on
  • Traction control warning on
  • Steering wheel position indicator incorrect
  • Lane keep assist disabled
  • Vehicle dynamics system not functioning

Probable Causes (Ranked by Likelihood)

  • Steering angle sensor out of calibration Very High
  • Steering angle sensor not recentered after alignment High
  • Faulty steering angle sensor Moderate
  • Clock spring affecting sensor signal Low

Step-by-Step Diagnostic Procedure

  1. Read steering angle sensor data with scan tool while turning wheel

  2. Check if sensor reads zero with wheel centered and straight

  3. Perform steering angle sensor calibration procedure

  4. Verify front wheel alignment is within spec

  5. Check for recent alignment or steering work

Frequently Asked Questions

Why does this happen after a wheel alignment?

When the front wheels are aligned, the steering wheel center position may shift slightly. If the steering angle sensor is not recalibrated to the new center, it reports incorrect angles.

How is the steering angle sensor calibrated?

Calibration typically involves turning the steering wheel lock to lock and then centering it with a scan tool. Some vehicles self-calibrate during a short drive after clearing the code.

Does this affect power steering?

It does not affect basic power steering operation, but it disables advanced systems like electronic stability control, lane keep assist, and variable-ratio steering on equipped vehicles.

Sources

This page is built from documented references. Verify against your own service info before repair work.

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