Symptoms of P0117 OBD II Trouble Code
- MIL (Malfunction Indicator Lamp) illumination
- Poor fuel economy
- Poor drivability
- Engine may run rough or blow black smoke out the tailpipe
- May not idle
- May start and then die
Common Causes of P0117 OBD II Trouble Code
- Bad ECT sensor
- Short to ground on ECT signal circuit
- Faulty or damaged connectors
- Wiring harness damaged
- Loose terminals at ECT or PCM
- POSSIBLY an overheated engine
- Bad PCM