P0231
Fuel Pump Secondary Circuit Low
Generic code
Injector Circuit
High severity
Hard repair
Free on OBD DashX
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What P0231 means
- The fault code P0231 indicates a problem with the fuel pump secondary circuit, which could lead to low fuel pressure and poor engine performance.
Possible symptoms
- Engine starts but stalls shortly after
- Engine performance is poor
- Reduced fuel efficiency
- Illuminated check engine light
Possible causes
- A faulty fuel pump relay
- A broken or shorted wire in the fuel pump circuit
- A damaged fuel pump
- A failed fuel pressure regulator
- A clogged fuel filter
Related parts
- Fuel Pump: The fuel pump takes fuel from the fuel tank and delivers it to the engine. Problems in this car's fuel pump may lead to engine misfire, poor fuel economy & poor acceleration
Possible solutions
- Replace the fuel pump relay
- Check and repair any damaged wiring in the fuel pump circuit
- Replace the fuel pump if it is damaged or not working
- Replace the fuel pressure regulator if failed
- Replace the fuel filter if it is clogged
Free on OBD DashX
P0231 on OBD DashX
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