Coolant Temperature Sensor Function

P0117

Diagnosis information - DME

Coolant temperature sensor function

Diagnostic conditions
- Power supply voltage 10 V ... 16 V
- Engine running

Possible fault causes
- Open circuit, short circuit to B+ or short circuit to ground in sensor line to coolant temperature sensor
- Open circuit in ground supply to coolant temperature sensor
- Coolant temperature sensor faulty
- Thermostat faulty (stuck open)
- Tiptronic vehicles only: coolant shutoff valve open (mechanical fault, lack of vacuum ... )
- DME control module faulty