OBD-II Error Code P0627: Fuel Pump A Control Circuit/Open - How to Fix It

Q: Can I drive with a P0627 code?

It's not recommended. This code indicates a potential fuel delivery issue that could cause stalling or no-start conditions, posing a safety risk.

Q: What causes P0627?

Common causes include a blown fuel pump fuse, faulty fuel pump relay, broken wiring/connectors, a bad fuel pump, or a failed ECM (rare).

Q: How much does it cost to fix P0627?

If it's a fuse or relay, under $50. A fuel pump replacement typically costs $200-$600 for parts and labor. A mechanic diagnostic fee is extra.

Q: Will clearing the code fix the problem?

No. Clearing the code only erases the stored fault. The underlying issue will likely cause the code to return immediately or cause driveability problems.

Q: What is the difference between code P0627 and P0628?

P0627 indicates an open circuit (high resistance or break), while P0628 indicates a short circuit (low resistance) in the fuel pump control circuit.

Abstract

Error code P0627 indicates that the engine control module (ECM) has detected an open or malfunction in the control circuit for fuel pump A. This typically means the fuel pump relay, wiring, or the pump itself has failed, causing a potential lack of fuel pressure and engine starting issues.