P127A Possible Causes
- Faulty fuel pump
- Fuel pump wiring harness open or shorted
- Poor electrical connection in fuel pump circuit
How is code P127A repaired?
Start by checking the “Possible Causes” listed above. Visually inspect the wiring harness and associated connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.
Possible Symptoms
- Check Engine Light on (or Service Engine Soon warning light)
P127A Meaning
The Engine Control Module (ECM) monitors fuel pressure. The ECM sets the OBDII code when the fuel pressure does not meet factory specifications.