P0255

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

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–333 (est.)

Symptoms

Unstable engine operation
Power Loss
Dips during acceleration
Difficulty starting
Increased fuel consumption

Causes

Open or short circuit in the injection pump control circuit
Oxidation of fuel injection pump connector contacts
Faulty injection pump control solenoid
Mechanical wear of fuel injection pump
Power or grounding problems
ECU malfunction

How to Fix

Check the integrity of the wiring harness to the injection pump
Clean and check fuel injection pump connectors
Check control solenoid resistance
Check fuel pressure and fuel injection pump performance
Scan the ECU for additional errors
If necessary, replace the fuel injection pump or its components

Related codes

P0251 P0252 P0253 P0254