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DTC Detection Logic

P0451 EVAP CONTROL SYSTEM PRESSURE SENSOR - DTC DESCRIPTION

DTC M.U.T.-III SE screen terms (Trouble diagnosis content) DTC detection condition
P0451 00 Barometric pressure sensor A/B
(EVAP System Pressure Sensor/Switch "A" Circuit Range/Performance
Diagnosis condition -
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 ECM (built-in barometric pressure sensor) are equal.
Diagnosis delay time -