Fault Code 4201

Fault Code 4201

Speed 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

Part 1:

Part 2: