Fuel Pump Control Module Performance
The fuel pump control module is not performing as expected.
Heads up: this code wasn't in our hand-written library yet, so DiagCoach AI built this page on the fly. Double-check critical specs against service info before condemning parts.
What it means (plain English)
The computer checks how well the fuel pump is working and finds it's not delivering the right amount of fuel pressure when needed.
What the computer is actually seeing
The fuel pump module is supposed to keep fuel pressure within a specified range while the engine is running. If it falls below 40 psi or exceeds 70 psi under load, the computer flags a problem.
What a healthy reading looks like
Fuel pressure should stay between 50 to 60 psi at idle and under load.
Guided diagnostic — the DiagCoach way
Don't just throw parts at it. Walk through these in order — each step tells you whether to keep going or stop and fix what you found.
- 11. Check fuel pump wiring and connectors for damage or corrosion. If bad, repair or replace the wiring/connectors.
- 22. Verify fuel pressure using a fuel pressure gauge. Compare the gauge reading to the expected values (50-60 psi). If outside this range, proceed to step 3.
- 33. Inspect the fuel pump relay operation. Swap with a known good relay and test again. If the problem persists, replace the fuel pump control module.
- 44. Check fuel filter for clogs. Replace if dirty, then retest fuel pressure.
Common causes
- Faulty fuel pump control module
- Damaged wiring or connectors to the fuel pump
- Clogged fuel filter
- Insufficient fuel supply from the tank
Typical repair cost
$$
Related codes
Frequently asked questions
Can I still drive the vehicle with this code?
Yes, but you may experience poor performance or fuel efficiency. Fix soon.
Will this code come back after clearing it?
If the underlying issue is not fixed, yes, it will likely return.
What other symptoms might I notice?
You may notice difficulty starting, engine stalling, or rough idling.
Working a real vehicle right now?
Let DiagCoach walk you through it live with your specific symptoms, vehicle, and what you've already checked.
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