Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Mazda >> 2010 >> 3 Mazdaspeed, 2.3 3 >> Repair and Diagnosis >> Engine Performance >> System >> On-Board Diagnostic [Engine Control System L3 With TC] (4 Of 5) >> DTC P120F:00 >> Notes

DTC P120F:00: Notes

DTC P120F:00 (L3 WITH TC) DETECTION CONDITION & POSSIBLE CAUSES

DTC P120:00 Fuel pressure regulator excessive variation
DETECTION CONDITION 
  • If the fuel pressure average value measured by the PCM exceeds the specification when the camshaft is rotating at a specified rate, the PCM determines that there is a fuel pressure regulator performance problem.

Diagnostic support note 
  • This is a continuous monitor (CCM).
  • The MIL does not illuminate.
  • FREEZE FRAME DATA (Mode 2)/Snapshot data is not available.
  • The DTC is stored in the PCM memory.
POSSIBLE CAUSE 
  • High pressure fuel pump connector or terminals malfunction
  • PCM connector or terminals malfunction
  • Spill valve control solenoid valve malfunction
  • PCM malfunction
scientia non olet · About Mike's Workshop Manuals