P1188 CADILLAC Possible Causes
- Faulty engine oil temperature sensor
- Engine oil temperature sensor harness is open or shorted
- Poor electrical connection in the engine oil temperature sensor circuit
How to Fix P1188 CADILLAC Code?
Start by checking the “possible causes” listed above. Visually inspect the corresponding wiring harness and connectors. Look for damaged components and check for broken, bent, pushed out, or corroded connector pins.
Possible Symptoms
- Engine light on (or engine service warning light soon)
P1188 CADILLAC Meaning
The Powertrain Control Module (PCM) monitors the engine oil temperature sensor. The PCM sets the OBDII code when the engine oil temperature sensor does not meet factory specifications.