P0254

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

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$167–667 (est.)

Symptoms

Poor engine starting
Unstable idling
Power drop
Increased fuel consumption
Sometimes - emergency mode

Causes

Fuel injection pump malfunction (wear, jamming)
Open or short circuit in control circuit
Problems with connecting wires (oxidation of contacts)
ECU malfunction
Mechanical damage to the fuel system

How to Fix

Check the injection pump control circuit for open/short circuit.
Check the resistance of the injection pump control coil
Diagnose pump operation under load
If necessary, replace the injection pump
Reflash the ECU (if required)

Related codes

P0251 P0252 P0253 P0087 P0191