Fuel Pump A Control Circuit/Open
This code indicates an issue with the fuel pump control circuit.
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 getting a signal that something's off with the fuel pump control. It might mean the pump isn't running, leading to fuel delivery issues.
What the computer is actually seeing
The Engine Control Module (ECM) monitors the voltage to the fuel pump control circuit. If the voltage is too low or too high (usually below 5V or above 12V), it triggers the code.
What a healthy reading looks like
Voltage should be between 10-14 volts with the ignition on and the engine off when measuring at the pump connector.
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 sufficient. If it's low or empty, this is a simple fix.
- 22. Inspect the fuel pump fuse and relay for continuity; replace if blown or faulty.
- 33. Locate and check the wiring and connectors leading to the fuel pump for damage or corrosion; repair as needed.
- 44. With the engine on, measure voltage at the fuel pump connector; it should be between 10-14V.
- 55. If voltage is good, listen for the fuel pump operation; if silent, replace the pump. If no voltage, move to the ECM and check connections or replace if necessary.
Common causes
- Faulty fuel pump relay
- Bad fuel pump
- Open circuit in wiring
- Failed ECM
- Corroded or loose connector at the fuel pump
Typical repair cost
$$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
No, it's not safe to drive; the vehicle may stall, and you could be left stranded.
Will this code come back after clearing it?
If the root cause isn't fixed, the code will likely return.
Why does this code sometimes pair with P0230?
P0230 indicates a similar fuel pump control issue, often caused by the same wiring or component failures.
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