DTC Detection Logic
WARNING: This page is about a different car, the 2018 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.
An excessively low voltage from the sensor is sent to ECM.
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DTC |
CONSULT screen terms (Trouble diagnosis content) |
DTC detection condition |
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P0451 |
EVAP SYS PRES SEN (EVAP control system pressure sensor performance) |
Diagnosis condition |
Ignition switch ON |
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Signal (terminal) |
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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. |
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Diagnosis delay time |
3 seconds or more |
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