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Home >> Infiniti >> 2021 >> Q60 Pure, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (DTCS) (4 Of 7) >> Engine (ECM) >> DTC P0451: EVAP Control System Pressure Sensor >> DTC Description >> DTC Detection Logic
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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

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Signal (terminal)

  • EVAP control system pressure sensor signal
  • MAP sensor

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 MAP sensor are equal.

Diagnosis delay time

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