Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
DTC P064A: Fuel Pump Control Module: General Description
Variable fuel pump system controls fuel feed rate of low pressure fuel pump by pulse with modulate (PWM) control in accordance with RPM, road.
It has following positive aspects compared with mechanically regulated fuel pump: low current consumption as it optimizes fuel feed rate, higher fuel efficiency, low pump noise, longer lifetime of the fuel pump.
ECM sets target fuel pressure and sends it to fuel pump control module (FPCM).
FPCM controls low pressure fuel pump by three phase duty control to adjust actual to target pressure based on fuel pressure sensor.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.