DTC Detection Logic
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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