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Home >> Infiniti >> 2007 >> QX56 AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS P0451 To P1217 >> DTC P0451 EVAP Control System Pressure Sensor >> On Board Diagnosis Logic
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On Board Diagnosis Logic

NOTE: If DTC P0451 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643. Refer to "DTC P0643 SENSOR POWER SUPPLY ".
DTC DETECTING CONDITION

DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0451
0451
EVAP control system pressure sensor performance ECM detects a sloshing signal from the EVAP control system pressure sensor
  • Harness or connectors
  • EVAP control system pressure sensor