DTC 12

012

Overheating.







Fault symptom
Parking heater fails to start.

Condition
The temperature of coolant temperature sensor 1 or coolant temperature sensor 2 is higher than 125 °C.
Parking heater activated.

Diagnostic help
Diagnostic trouble code 017, 041 or 042 may also have been generated.
Parking heater can be activated with Tech 2.
Parking heater function can be programmed in SID.
Eberspacher diagnostics instrument used for diagnosis.