P0253

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

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–222 (est.)

Symptoms

Loss of engine power
Unstable engine operation
Problems starting the engine
Increased fuel consumption
Check Engine light comes on

Causes

Fuel injection pump malfunction
Damage to BIECTA pump control wires
Problems with contacts in the control circuit
Engine control unit (ECU) malfunction
Mechanical damage to the rotor or pump chamber

How to Fix

Check the condition of the wiring harness and contacts of the injection pump
Measure resistance and voltage in the pump control circuit
Check the mechanical condition of the injection pump
If necessary, replace the injection pump
Reflash or replace the ECU if it is suspected of being faulty