Code Definition

P0253 — Injection Pump Fuel Metering Control Circuit A Low

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

About P0253

P0253 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 P0253 is stored, the module has detected a signal or supply voltage lower 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 P0253 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 P0253 fault code is set when the powertrain control module (PCM) detects an issue in the fuel metering control circuit associated with the injection pump. This circuit typically includes the fuel control actuator or related components. The fault is triggered if the voltage or current in the circuit is outside the expected range, suggesting an electrical problem or a malfunction in the fuel metering system.

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