Code Definition

P025B — Fuel pump control module circuit malfunction

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

About P025B

P025B 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 P025B is stored, the module has detected an electrical-circuit fault in the wiring, connector, or driver associated with the named component.

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 P025B 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 P025B fault code is set when the Engine Control Module (ECM) identifies a malfunction within the circuitry of the fuel pump control module. This code indicates that there is a problem affecting the electrical circuit that connects the ECM to the fuel pump control module. Such a malfunction can disrupt the normal operation of the fuel pump, potentially leading to issues with fuel delivery and engine performance.

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