Steering Angle Sensor : Sensor signal implausible with respect to the reference yaw rate
Check if sensor is calibrated correctly: with engine running, set steered wheels in straight position, read steering angle via diagnosis, check if the value of steering angle is 0 +- 10 degrees. If value is not OK, recalibrate the sensor. While engine still running, mark zero position on the steering wheel and turn it in both directions by one turn (360 degrees). Check the steering angle values via diagnosis (+-360 +-10 degrees). If values are not OK, check the mounting and the drive of the sensor. If fault is still active check steering system for specified parts (e.g. steering lever). With engine running turn the steering wheel to its end positions, read the steering angle values via diagnosis and check if the read values are within the allowed range defined in the dataset. If fault is still active, replace the steering angle sensor. Check whether wheelbase and wheeltrack correspond to the vehicle specification in the dataset and download correct dataset. Check for correct tacho signal calibration. If fault is still active replace the yaw rate sensor.
What you'll see
No driver-visible symptom recorded.
System reaction
ESP control off. ESP Warning Lamp.
Diagnostic depth
The failure is reported if steering angle sensor signal is implausible compared to the yaw rate sensor signal and reference yaw rate.
Sensor is calibrated incorrectly or incorrect mounting or drive defect or steering system does not correspond to the vehicle specification (wrong steering gearbox or steering gear arm) or wheelbase or wheeltrack do not correspond to the vehicle specification or calibrated vehicle speed does not correspond to the wheel speeds or steering system damaged or steering angle sensor damaged.