P127B Possible Causes
- Faulty camshaft position sensor
- Camshaft position sensor harness is open or shorted
- Poor electrical connection in the camshaft position sensor circuit
How is code P127B repaired?
Start by checking the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.
Possible Symptoms
- Engine light on (or service engine soon warning light)
P127B Meaning
The Engine Control Module (ECM) monitors the camshaft position sensor. The ECM sets the OBDII code when the camshaft position sensor does not meet factory specifications.