Code Definition

P025D — Fuel pump control module circuit high

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

About P025D

P025D 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 P025D 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 P025D 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 P025D fault code is activated when the Engine Control Module (ECM) detects a higher than expected voltage in the circuit of the fuel pump control module. This high voltage condition suggests an electrical issue within the system that regulates the fuel pump, potentially including short circuits, electrical surges, or a malfunction in the control module. A high voltage in this circuit can affect the operation of the fuel pump, potentially impacting fuel delivery and engine performance.

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