Fuel Transfer Pump Status
Indicates an issue with the fuel transfer pump operation.
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 is monitoring the fuel transfer pump that moves fuel from the tank to the engine, and it has detected a problem with the pump's function.
What the computer is actually seeing
The engine control module (ECM) reads the fuel pump operation voltage. When the pump is active, it should show around 12V (or system voltage) while running. A failure to achieve the proper voltage triggers this fault.
What a healthy reading looks like
Expected voltage while the fuel pump is running should be between 11V to 14V, and operation time should not exceed 100 milliseconds for pump pressure checks.
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; ensure it's above 1/4 full. If low, refuel and retest.
- 22. Inspect wiring and connectors for the fuel transfer pump. Look for shorts, breaks, or corrosion. Repair as necessary.
- 33. Measure the voltage at the fuel pump connector with the key on and engine off. Should be about 12V. If not, check the fuse and relay (replace if faulty).
- 44. Start the engine and measure the voltage while the pump is operational. Voltage should remain between 11V-14V. If not, replace the pump.
- 55. If voltage is normal, disconnect the fuel pressure sensor. Check for any changes in the fault code. If it clears, the sensor may be bad.
Common causes
- Faulty fuel transfer pump
- Wiring issues or poor connections
- Low fuel levels or fuel contamination
- Defective fuel pressure sensor
- Blocked fuel lines or filters
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's not advisable to drive as it may lead to fuel starvation and engine performance issues.
Will the code come back after repairs?
If the underlying issue is resolved and connections are secure, the code should not return.
Why does this code appear with other fuel system codes?
Fuel transfer pump issues often relate to overall fuel delivery problems, hence multiple fuel system codes may appear.
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