FixVault

On Board Diagnosis Logic

NOTE: If DTC P0451 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643. Refer to "DTC CONFIRMATION PROCEDURE ".
DTC DETECTING CONDITION CHART

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