P064A

Symptoms

• Check Engine light comes on
• The engine does not start or is difficult to start
• Unstable idle and jerking when driving
• Dips when pressing hard on the gas
• Engine stalls under load

Causes

• Fuel pump control module (FPCM) internal malfunction
• Lost communication between ECU and FPCM
• FPCM module power or ground fault
• Damage to the wiring between the ECU and FPCM
• Malfunction of the fuel pump itself (load on the module)

How to Fix

1. Check the fuel pressure with a pressure gauge
2. Check FPCM power supply and ground
3. Inspect the wiring and connectors between the ECU and FPCM
4. Check for U-codes (communication errors) in the ECU memory
5. Diagnose the FPCM module with a specialized scanner
6. If the malfunction is confirmed, replace the FPCM module

Related codes

Error P064A by Vehicle Brand