Trouble codes › P0627
P0627 Fuel Pump "A" Control Circuit/Open
Fuel and air
P0627 means there's a fault in the fuel pump control circuit, which can make the engine stall or not start.
The engine computer, or a separate fuel pump control module, has found an open or fault in the circuit that controls the fuel pump.
The fuel pump may stop working without warning, stalling the engine. Don't rely on the vehicle until it's fixed.
Common causes
- A failed fuel pump control module (often mounted near the tank and prone to corrosion)
- Damaged or corroded wiring to the pump
- A failed fuel pump relay or fuse
- A failing fuel pump
Symptoms
- Cranks but won't start
- Stalling or cutting out
- Loss of power
What to check first
- Check the fuel pump fuse and relay.
- Find the fuel pump control module (if your vehicle has one) and inspect it and its connector for corrosion.
- Check wiring to the pump for damage.
- Check for service bulletins; some trucks have known fuel pump driver module problems.
What does P0627 mean on your vehicle?
The likely cause depends on your engine. iRepair researches your exact year, make, model and engine (service bulletins, recalls and owner reports) and tells you what to check first. Your first 3 questions are free.
Ask iRepair about P0627No scanner? Most auto parts stores read check-engine codes for free.
Related codes
General guidance for P0627 on most vehicles. Some makers use the same code a little differently; confirm in the service information for your vehicle, put safety first, and see a professional when in doubt.