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P0252 is a diagnostic trouble code (DTC) for "Injection Pump Fuel Metering Control “A” Range/Performance (Cam/Rotor/Injector)". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.
Injection Pump Fuel Metering Control “A” Range/Performance (Cam/Rotor/Injector)
P0252 is an OBD-II generic code for the injection pump fuel metering control valve circuit when the engine control module (ECM) did not receive a signal from the valve indicating movement.
The engine control module (ECM) monitors the fuel injection pump metering valve position current feedback when commands to control the valve are sent to the valve from the ECM.
The ECM attempts to move the valve, and if the current is out of specifications, then it sets the code P0252 and turns on the Check Engine Light.
The Check Engine Light will be illuminated and the code is set in ECM memory as a fault.
The engine may run too lean or too rich depending on the fuel valve failed position.
The engine may have reduced engine power and rough running conditions.
Scans codes and documents the code in the ECM
Diagnose code as per the manufacturer's pinpoint test to verify the fuel injection pump failure
One manufacturer suggests to clear codes, and if the code returns, to replace the injection pump.
Code P0252 is an indication that the fuel injection pump cannot control fuel into the engine and must be replaced to fix the code and drive symptoms.
Code P0252 is generated by a diesel engine vehicle that has an injection pump that cannot control the amount of fuel injected into the cylinders and will cause the code to set. Some vehicles may have a fuel valve that can be replaced without replacing the entire fuel injection pump. Follow the manufacturer pinpoint tests for diagnosis and repair for your vehicle.
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