P0628
Fuel Pump A Control Circuit Low
Fuel Pump A Control Circuit Low: the control-circuit voltage is below the expected range. Often a short to ground or high resistance in the wiring.
Fuel Pump A Control Circuit Low: the control-circuit voltage is below the expected range. Often a short to ground or high resistance in the wiring.
Common causes
- high
Pump circuit shorted to ground
One of the most commonly reported causes for this code — check this first.
Typical part cost: $130-880
- medium
Pump relay defective
A plausible cause — test and verify before replacing parts.
Typical part cost: $130-880
See all causes + fix costs
Create a free Wrenchify account to unlock the rest for P0628.
Unlock causesFree forever · No credit card
First things to check
- 1Confirm the code with a scan tool and check for additional related codes.
- 2Inspect the relevant sensors, wiring, and connectors for damage or corrosion.
Get the full step-by-step diagnosis
Create a free Wrenchify account to unlock the rest for P0628.
Unlock diagnosisFree forever · No credit card
Related codes
See related trouble codes
Create a free Wrenchify account to unlock the rest for P0628.
Unlock related codesFree forever · No credit card
Frequently asked questions
What does P0628 mean?
P0628 means "Fuel Pump A Control Circuit Low". It is a generic OBD-II code that points to a fault in the computer & auxiliary output controls.
What are the most common causes of P0628?
pump circuit shorted to ground; pump relay defective; connector pins corroded - high contact resistance — these are the most commonly reported causes. Verify with a proper diagnosis before replacing parts, or use the Wrenchify app for a vehicle-specific diagnosis.
Can I keep driving with this code?
This code can put the vehicle into limp or reduced-power mode. Avoid extended driving and have the vehicle diagnosed promptly. Use the Wrenchify app for a full diagnosis specific to your vehicle.
Get the full P0628 diagnosis for your vehicle
Year, make, model + step-by-step repair help — free plan included.