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
- ABS control unit faulty


Diagnosis/troubleshooting

Work Instruction 1 - 4: