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Fault Code 4210



Fault Code 4210

Speed Sensor Lead, Rear Right

Diagnostic conditions
- Ignition on

Possible cause of fault
- Short circuit to B+/ground or open circuit between control unit and speed sensor
- Speed sensor faulty
- Control unit faulty

Affected pins
PSM 5.3: Pin 11 and pin 12
PSM 5.7: Pin 30 and pin 31

Diagnosis/troubleshooting PSM 5.3


Work Instruction 1 - 3:




Work Instruction 4 - 10:






Diagnosis/troubleshooting PSM 5.7


Work Instruction 1 - 6:




Work Instruction 7 - 10: