Fault Code 4
Fault Code 4
Outer left sensor faulty
Diagnostic conditions
- Ignition on
- Reverse gear engaged
Possible cause of fault
- Short circuit to voltage/ground or open circuit in the supply leads between the control module and the outside sensor on the left
- Outside sensor on left is faulty
- Control module is faulty
Affected terminals
Terminals I/1, I/5 and I/7
Diagnosis/troubleshooting