Chassis, generic

C052A Steering Angle Sensor Module Correlation

Check engine lightUsually off
EmissionsNot relevant
Drive cycleRequired
Limp modePossible

The steering angle sensor module reports wheel angle and turn rate to the stability control unit, which cross-checks that value against an independent estimate. Correlation means the reading and the estimate disagree for longer than the calibrated window; the signal itself is present. A Bosch patent derives a model yaw rate from the angle and the left/right wheel-speed difference, and a Ford patent lets the ESC unit judge an angle supplied by electric power steering from yaw rate, wheel speeds and lateral acceleration, switching ESC off with a warning lamp if the check fails. No manufacturer documents this exact code publicly. Typical triggers are an offset after an alignment or steering repair and an internal module fault. Unlike C0528 or C0529, the sensor may look sane on its own.

Likely causes

Angle offset after wheel alignment or steering work without zero-point adjustment
Internal fault in the steering angle sensor module
Faulty comparison signal (yaw rate, wheel speed or steering angle from power steering)

Symptoms

  • ESC or traction control warning lamp on
  • Stability control switched off or intervening at the wrong moment
  • Steering wheel off-centre when driving straight

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€50–600
Time0.3–2 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

steering angle sensor module

Related codes

C0526C0528C0529C05B2

References: patents.google.com, patents.google.com, bosch-mobility.com, law.cornell.edu.