Code Definition

P064A — Fuel pump control module circuit malfunction

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

About P064A

P064A 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 P064A 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 P064A 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 fault code P064A is set when the Engine Control Module (ECM) detects a malfunction within the circuitry of the Fuel Pump Control Module (FPCM). This diagnostic trouble code indicates that there is an electrical issue in the circuit responsible for controlling the fuel pump, which could be due to wiring problems, a faulty FPCM, or a malfunction in the ECM's ability to communicate with or control the FPCM.

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