Can you keep driving?
Can you keep driving?
Stop driving if any of these apply
- !The engine starts stalling, losing power sharply, or refusing to respond to throttle normally.
- !The check-engine light flashes or the vehicle suddenly runs much worse after the code appears.
What to check first
Step-by-step checks
- 1
Safety first
Work carefully around fuel lines and avoid sparks, hot lights, or open flames
- 2
Free - no tools
Check whether the engine is cranking but not starting, or whether it starts and then stalls
- 3
Basic tool needed
Inspect the fuel-pump relay, fuse, and related wiring before assuming the pump itself is bad
- 4
Basic tool needed
Listen for pump prime at key-on if the vehicle normally makes one
- 5
Basic tool needed
If scan data or wiring information is available, confirm whether the ECU is commanding the circuit as expected
If the code returns
- -If the relay or fuse is missing power, solve that feed issue before buying a pump.
- -If the pump runs when directly powered but not through the control side, the relay or control circuit rises on the list.
- -If the code returns after a repair, recheck the control wiring and connector fit before assuming the new part failed.
Background
What this code means
P0230 is a generic OBD-II code for a fuel pump primary circuit malfunction.
That usually means the ECU is not happy with the control side of the fuel-pump circuit, which can affect whether the pump runs at all or whether it runs reliably.
Diagnosis
Common causes
Fuel pump relay fault
A worn or sticking relay can interrupt the primary circuit.
Blown fuse or feed issue
The circuit may be losing power before the pump ever sees it.
Wiring or connector problem
A loose or damaged connection can stop the pump control side from working.
ECU control fault
The command side may be the reason the circuit is not behaving correctly.
Avoid these mistakes
What not to do
- xDo not replace the sensor or pump first if there is obvious wiring, connector, or intake damage.
- xDo not ignore drivability changes or stalling just because the code sounds electrical.
Parts
Parts that may need replacing
See also
Related OBD codes
Source notes
Generic OBD-II (SAE J1979 / ISO 15031-5). P0230 was expanded around common fuel-pump primary circuit faults, especially relay problems, fuse issues, and wiring damage.
This guide is written as a generic multi-make reference, so bulletin history, sensor locations, and repair order can still change by manufacturer and engine family.
This is generic OBD-II guidance and should not override vehicle-specific service information. Exact diagnosis and repair steps vary by make, engine family, and model year.
Last reviewed: 2026-04-10
Reference: Open reference