Fuel Pump Control Module Requested MIL Activation
This code indicates the fuel pump control module is requesting the check engine light to be activated.
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 control module has detected a problem and is signaling the car's computer to turn on the check engine light to alert you.
What the computer is actually seeing
The fuel pump control module sees abnormal voltage or communication errors related to the fuel pump operation, leading to the request for a malfunction indicator light (MIL) activation.
What a healthy reading looks like
Fuel pump operation should show 12V when active; expected fuel pressure around 40-60 PSI depending on vehicle model.
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.
- 1Check the wiring and connector at the fuel pump and control module for damage or corrosion. If any are found, repair or replace as necessary. Decision point: are the connections good? If yes, proceed.
- 2Test the fuel pump circuit for proper voltage using a multimeter. You should see 12V when the pump is commanded on. Decision point: operation at expected voltage? If no, check power and ground circuits, then proceed.
- 3Check the fuel pressure using a gauge to ensure it's within the expected range (40-60 PSI). Decision point: is the pressure within spec? If no, consider replacing the fuel pump.
- 4If the fuel pump and wiring are good, test the fuel pump control module for faults. Refer to specific service manual for testing procedures. Decision point: is the module functioning? If no, you may need to replace it.
Common causes
- Faulty fuel pump control module
- Wiring issues to the fuel pump
- Fuel pump failure
- Low fuel pressure
- Bad fuel pump relay
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's moderate severity; drive it but prioritize repairs soon to avoid fuel system issues.
Can I reset the code and keep driving?
You can reset it, but if there's a legitimate problem, the light will likely come back.
Why does this code pair with fuel pressure codes?
If the control module detects low pressure or pump issues, it triggers this request for a MIL.
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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