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Home >> Mazda >> 2017 >> CX-9 Signature >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> On-Board Diagnostic - Engine Control System (2 Of 5) >> DTC P064A-00; Fuel Pump Control Module Error

DTC P064A-00; Fuel Pump Control Module Error

DETECTION CONDITION AND POSSIBLE CAUSE

DTC P064A:00 Fuel pump control module error
DETECTION CONDITION
  • The difference between the actual fuel pressure and the target fuel pressure is 10 kPa {0.10 kgf/cm2 , 1.5 psi} or more even though the fuel pressure feedback amount on the low pressure side remains high.

    Diagnostic support note

  • This is a continuous monitor (other).
  • The check engine light does not illuminate.
  • FREEZE FRAME DATA is not available.
  • Snapshot data is available.
  • DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION
  • Not applicable
POSSIBLE CAUSE
  • Fuel pump unit connector or terminals malfunction
  • Fuel pump unit malfunction
  • Fuel pump control module connector or terminals malfunction
  • Short to ground in wiring harness between fuel pump unit terminal A and fuel pump control module terminal 2C
  • Open circuit in wiring harness between the following terminals:
    • Fuel pump unit terminal A-Fuel pump control module terminal 2C
      • Fuel pump unit terminal B-Fuel pump control module terminal 2D
  • Fuel pump control module malfunction
  • PCM connector or terminals malfunction
  • PCM malfunction