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. Trouble diagnosis name
(Trouble diagnosis content)
DTC detecting condition Possible cause
P0452 EVAP SYS PRES SEN
(EVAP control system pressure sensor low input)
An excessively low voltage from the sensor is sent to ECM.
  • Harness or connectors

    (EVAP control system pressure sensor circuit is shorted.)

  • EVAP control system pressure sensor