P0668 Cadillac 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
– 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 Cadillac Description
PCM/ECM/TCM internal temperature sensor circuit low
Cadillac Vehicle:Cadillac CTS Coupe, Cadillac CTS-V Coupe , Cadillac Eldorado , Cadillac Escalade EXT , Cadillac ATS , Cadillac CTS , Cadillac CTS Sedan , Cadillac CTS Sport Sedan , Cadillac CTS-V , Cadillac CTS-V Sedan , Cadillac Catera , Cadillac DTS , Cadillac DeVille , Cadillac STS-V , Cadillac STS , Cadillac Seville , Cadillac XTS , Cadillac XLR , Cadillac XLR Platinum , Cadillac Escalade , Cadillac SRX