Share a caseSign in
FuelSeverity Medium: diagnose soon

P0629Fuel Pump "A" Control Circuit High

What it means

The fuel pump control circuit reads too high a voltage.

Symptoms

  • Pump may run constantly or not at all

Common causes

  • Control wire shorted to voltage
  • Faulty relay or module

What to check first

  1. Check the control wire
  2. Test the relay or module
  3. Check whether the pump runs with the key off
Can I drive with P0629? Usually yes for a short distance, but performance or economy may suffer and the fault can get worse. Diagnose it soon.

Generic OBD-II meaning. Manufacturer-specific meanings and checks can differ; always check the service information for the car.

Cases with P0629 (0)

Share yours

No published cases with this code yet.

Colleagues asking about P0629

Ask for help

Stuck on P0629? Describe what you measured and ask the community.

P0629: questions and answers

What does P0629 mean?

P0629: Fuel Pump "A" Control Circuit High. The fuel pump control circuit reads too high a voltage.

What are the symptoms of P0629?

Pump may run constantly or not at all.

What causes P0629?

Control wire shorted to voltage. Faulty relay or module.

How do you diagnose P0629?

1. Check the control wire 2. Test the relay or module 3. Check whether the pump runs with the key off

Can I drive with P0629?

Usually yes for a short distance, but performance or economy may suffer and the fault can get worse. Diagnose it soon.