Fault Code 0818

Fault code 0818

Evaporator temperature sensor

Diagnostic conditions
- Ignition on
- Battery positive voltage OK (11.4 to 14.5 V)
- Internal function test completed on air-conditioning system regulator control unit

Possible fault causes
- Short circuit to ground
- Open circuit/short circuit to B+
- Temperature sensor faulty
- Front air-conditioning system regulator control module faulty

Affected pins
- Manual air conditioning
Air-conditioning system regulator control unit, front: Plugs C and E
- Connector C: Pin 21 'Temp. sensor signal (signal for evaporator temperature sensor)'
- Connector E: Pin 12 'Ground sensor'

Diagnosis/troubleshooting
- Manual air conditioning