Fuel Pump Module Performance Problem
There's a problem with the fuel pump module's performance.
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 fuel pump module isn't working right, which means your engine might not be getting enough fuel.
What the computer is actually seeing
The engine control module (ECM) monitors the fuel pump module's voltage signal, looking for specific operating ranges around 12V when running. An out-of-range voltage indicates a performance issue.
What a healthy reading looks like
Fuel pump module voltage should be around 12V while running, with pressure readings of 35-55 PSI depending on the engine.
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 the fuel level in the tank—should be above 1/4 tank.
- 22. Inspect fuel pump fuses and relays—swap with known good if needed.
- 33. Check voltage at the fuel pump module connector—should be around 12V with ignition ON, engine OFF.
- 44. If voltage is low, check wiring from the relay to the module for shorts or opens.
- 55. If voltage is good, check for fuel pressure with a gauge—should be within manufacturer range (usually 35-55 PSI).
- 66. If the pressure is low, replace the fuel pump module if it failed a pressure test.
Common causes
- Faulty fuel pump module
- Wiring issues (frayed, shorted, or open circuit)
- Bad fuel pump relay
- Clogged fuel filter
- Low fuel level
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It’s moderate severity; you can drive short distances, but don't ignore it—fix soon.
Will this code come back after clearing?
It might, especially if the issue isn't fixed—watch for the engine light.
Why does this code pair with other codes?
Codes related to the fuel system often appear together due to shared components or symptoms.
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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