P0251
Injection Pump Fuel Metering Control A (Cam/Rotor/Injector)
P0251 is an OBD-II diagnostic trouble code meaning: Injection Pump Fuel Metering Control A (Cam/Rotor/Injector). Common causes: fuel injection pump malfunction, open or short circuit in wiring harness. Estimated repair cost: $56–278.
Symptoms
- Unstable engine idling
- Reduced engine power
- Increased fuel consumption
- Difficulty starting the engine
- Engine transition to emergency mode
Causes
- Fuel injection pump malfunction
- Open or short circuit in wiring harness
- Poor contact in control circuit connectors
- Failure of the fuel injection pump solenoid valve
- Problems with the engine control unit
How to Fix
- Carry out diagnostics of the injection pump control circuit
- Check the condition of the connectors and wiring harness
- Check the resistance of the solenoid valve windings
- Test the control signal from the ECU
- If necessary, replace the fuel injection pump or its components
Related codes
Error P0251 by Vehicle Brand
FAQ
What does the P0251 code mean?
P0251 is an OBD-II diagnostic trouble code that indicates: Injection Pump Fuel Metering Control A (Cam/Rotor/Injector)
What causes a P0251 error code?
The most common causes of P0251 include: Fuel injection pump malfunction; Open or short circuit in wiring harness; Poor contact in control circuit connectors; Failure of the fuel injection pump solenoid valve.
How do I fix a P0251 diagnostic trouble code?
To fix P0251: Carry out diagnostics of the injection pump control circuit. Check the condition of the connectors and wiring harness. Check the resistance of the solenoid valve windings. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0251?
Limited driving only, diagnose soon
How much does it cost to fix P0251?
The estimated repair cost for P0251 is $56–278. Actual cost depends on your vehicle, location, and labor rates.
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