P0230 — Fuel pump electrical circuit problem detected
The engine control unit detected an issue with the electrical circuit powering the fuel pump. This usually means the fuel pump is not receiving proper voltage or the wiring has a fault. It can cause the fuel pump to stop working intermittently or completely, leading to engine stalling or failure to start.
Common causes
The cause is almost always one of a few things. Here they are — P0230 rarely comes from anything outside this list:
- Blown fuse or relay for fuel pump circuit
- Damaged or corroded wiring/connectors to fuel pump
- Faulty fuel pump
- Faulty fuel pump relay
- Bad ground connection in fuel pump circuit
Where to start
In the order a sensible mechanic would work — the cheap checks first, the expensive replacements only after:
- Check and replace blown fuse or faulty relay
- Inspect and repair wiring and connectors
- Test fuel pump operation and replace if faulty
- Check and clean ground connections
- Replace fuel pump relay if needed
That is what holds for P0230 in general. From here it depends on your engine — tell me which car it is and what it does, and I will give you the steps for it: real procedures, torque figures and diagrams instead of general advice.
Why TorqFix for your car?
Above is what the code means and why it appears. TorqFix goes further — it gives you specific procedures, torque values, wiring diagrams and pinouts for your exact engine, not generic steps for every car. Real workshop data (127,000+ diagrams, 10,000+ procedures), interpreted by AI in your language.
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Code breakdown
🔧 Related repair procedures
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- VW: Checking return flow rate of injectors with engine running
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- AUDI: Removing and installing injectors - magnesium intake manifold
- AUDI: Renewing seals on injectors
- VW: Removing and installing injectors (piezo injectors)
- AUDI: 3-cylinder TDI unit injector engine (1.4 ltr. 2-valve), mechanics — Installing engine
- VW: Checking return flow rate of injectors at starter speed
Who makes these pages, and how
TorqFix was built by a mechanic — after a 2,700 km drive with five roadside repairs that no diagnostic tool could explain.
The figures on this page come from manufacturer workshop documentation and are shown as they are. The page is assembled automatically from that data — it is not written by an AI. The AI works in the chat, where it answers for your specific car. It writes nothing here.
The same code can mean different things on different makes. Match the meaning to your make before acting on it.
Seen a figure that does not match your manual? Write to us — we correct it and note when. support@torqfix.com
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