PSM 5.3 and 5.7
Fault code 4201Speed sensor, front right
Implausible signal from speed sensor
Diagnostic conditions
- Vehicle speed > 40 km/h (25 mph) for min. 40 s.
Possible cause of fault
- Toothed ring/speed sensor soiled or damaged, wheel-bearing play too great
- Pick-up due to faulty shield
- Speed sensor faulty
- Control unit faulty
Affected pins
Pin 15 and pin 16
Diagnosis/troubleshooting
