P0668 Volvo DME Internal Fault Interior Temperature Sensor Signal

Possible causes

– Open or shorted interior temperature sensor circuit condition
– Poor interior temperature sensor electrical connection
– Faulty ECM /TCM

Tech description

Replace DME as sensor is internal component

Symptoms

– Engine Light ON (or Service Engine Soon Warning Light)

P0668 Volvo Description

PCM/ECM/TCM internal temperature sensor circuit low