Code Definition

P0254 — Injection Pump Fuel Metering Control Circuit A High

System: Powertrain  |  Type: Generic (OBD-II Standard)  |  Make: Generic

About P0254

P0254 is a generic (obd-ii standard) powertrain diagnostic trouble code. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

When P0254 is stored, the module has detected a signal or supply voltage higher than the expected operating range.

Scanning & clearing: A generic OBD-II scan tool will usually read and clear powertrain (P) codes. For live data, freeze-frame capture, and bi-directional tests you may need a more capable scan tool that supports the vehicle's ECM protocol.

Because P0254 is a generic OBD-II code, its base definition is shared across manufacturers. The specific diagnostic steps, reference values, and repair procedures can vary by vehicle, and the TaT Diagnostic Assistant includes verified procedures submitted by working technicians.

Code Information

The P0254 fault code is triggered when the powertrain control module (PCM) detects that the voltage or current in the fuel metering control circuit is higher than the expected range. This circuit manages the fuel delivery by controlling the fuel control actuator in the injection pump. A high signal may indicate an electrical fault or a failure in the injection pump control system.

Quick Facts