Fault Code 25

Fault Code 25

Sensor Supply Voltage (5 V) - Too High/Too Low/B+ Short/Ground Short

Diagnostic conditions
- Ignition on
- No control unit fault stored

Possible cause of fault
- Short circuit to B+/ground/between wires or open circuit in wiring between air-conditioning system regulator and the four flap sensors
- One of the four flap drive motors faulty
- Air-conditioning system regulator faulty

Affected pins
Plug B, pin 9 and pin 20

Diagnosis/troubleshooting

Work Instruction 1 - 2:

Work Instruction 3 - 6:

Work Instruction 7 - 13: