P0669 Buick 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)
P0669 Buick Description
PCM/ECM/TCM internal temperature sensor circuit high
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