P064A
Fuel Pump Control Module A
Fuel delivery
Generic OBD-II
High
What it means
P064A means the ECM detected a fault with fuel pump control module A — the module that regulates power to the fuel pump. Because it controls fuel delivery, the fault can cause hard starting, stalling, or a no-start. It usually points to the module, its power and ground circuits, or the wiring between it and the ECM.
High
Can I keep driving? Risky — the module that runs the fuel pump is faulting; the engine may stall, lose power, or fail to start. Have it diagnosed before driving far.
Common symptoms
What you'll notice
- Check-engine light on
- Hard starting or no-start
- Stalling, especially under load
- Loss of power, hesitation, or surging
Common causes
Most likely first
- Faulty fuel pump control module (FPCM)Likely
- Open or short in the FPCM power or ground circuitCommon
- Poor connector or wiring between the ECM and the FPCMCommon
- Faulty fuel pump relayLess often
- Less commonly, the fuel pump itselfLess often
How to diagnose & fix
Work through it in order
- Scan for related fuel-system and communication codes to narrow the fault.
- Check the FPCM's power, ground, and control/communication wiring for opens or shorts.
- Test fuel-pump operation and fuel pressure at the rail.
- Inspect the FPCM connector and the relay.
- Replace the fuel pump control module if confirmed faulty, then clear and re-test.
FAQ
Quick answers
Is it safe to drive with P064A?+
Not recommended. A failing fuel pump control module can cause a sudden stall or a no-start, so get it diagnosed before relying on the vehicle.
Can I just clear P064A?+
It will return if the module, wiring, or fuel-delivery fault is still present. Fix the cause first.
Related codes
Often seen with P064A
Read & clear P064A yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX