DTC Detection Logic

DTC

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

P0451

Barometric pressure sensor A/B

(EVAP System Pressure Sensor/Switch "A" Circuit Range/Performance

Diagnosis condition

Ignition switch ON

Signal (terminal)

EVAP control system pressure sensor signal

Threshold

ECM detects a state that the pressure difference remains the threshold value or more for continuously for 5 seconds or more under the condition that the pressure of the EVAP control system pressure sensor and that of the Barometric pressure sensor are equal.

Diagnosis delay time

3 seconds or more