P0251

Injection Pump Fuel Metering Control A (Cam/Rotor/Injector)

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–278 (est.)

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

P0252 P0253 P0254 P0087 P0088