Fault Code 4440

Fault Code 4440

Steering-angle sensor

Diagnostic conditions
- Steering angle sensor actual value is evaluated and displays an implausible value

Possible cause of fault
- Short circuit to ground/B+ or open circuit
- Steering angle sensor calibration incorrect
- Wiring/plug connection faulty
- Steering angle sensor faulty

Affected terminals
PSM 5.7 terminals 21,39
PSM 5.3 terminals 2, 61, 63

Diagnosis/troubleshooting PSM 5.7

NOTE: Calibration of the steering angle sensor must be performed on a measuring platform. The steering-angle sensor must be calibrated after work has been carried out on the running gear in the area of the front axle. The security code is required for calibration of the steering-angle sensor. The security code is contained under menu item "Actual values": Calibration is described in Calibrating steering angle sensor.







Diagnosis/troubleshooting PSM 5.3

NOTE: Calibration of the steering angle sensor must be performed on a measuring platform. The steering-angle sensor must be calibrated after work has been carried out on the running gear in the area of the front axle. The security code is required for calibration of the steering-angle sensor. The security code is contained under menu item "Actual values": Calibration is described in Calibrating steering angle sensor.