Fault Code 4201

Fault Code 4201

Speed-sensor, front right
Implausible signal from speed sensor

Diagnostic conditions
- Vehicle speed > 40 km/h for at least 40 s

Possible cause of fault
- Toothed ring/speed sensor soiled or damaged, wheel-bearing play too large
- Interference due to faulty screening
- Speed sensor faulty
- Control unit faulty

Affected pins
Pin 15 and pin 16

Diagnosis/troubleshooting

Part 1:

Part 2: