FixVault

DTC Detection Logic

DTC No. CONSULT screen terms (Trouble diagnosis content) DTC detecting condition Possible cause
P0453 EVAP SYS PRES SEN (Evaporative emission system pressure sensor/switch high) An excessively high voltage from the sensor is sent to ECM.
  • Harness or connectors

    (EVAP control system pressure sensor circuit is open or shorted.)

    [CKP sensor (POS) circuit is shorted.]

    (APP sensor 2 circuit is shorted.)

    (Refrigerant pressure sensor circuit is shorted.)

    (Engine oil pressure sensor circuit is shorted.)

  • EVAP control system pressure sensor
  • Crankshaft position sensor (POS)
  • Accelerator pedal position sensor
  • Refrigerant pressure sensor
  • Engine oil pressure sensor
  • EVAP canister vent control valve
  • EVAP canister
  • Rubber hose from EVAP canister vent control valve to vehicle frame
  • Sensor power supply 2 circuit