FixVault

DTC Detection Logic

NOTE:

If DTC P0451 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643. Refer to  DTC LOGIC  . 

DTC No. CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition Possible cause
P0451 EVAP SYS PRES SEN
(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 circuit is shorted.)

  • EVAP control system pressure sensor