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Home >> Subaru >> 2018 >> Crosstrek Base, Standard Trans >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostics) (2 Of 4) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC P0451: EVAP System (CPC) Pressure Sensor/Switch Circuit Range/Performance >> Diagnostic Method

Diagnostic Method

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE SPECIFICATION

Malfunction Criteria Threshold Value
|Evaporative Leak Check Module pressure sensor output value - intake manifold pressure (absolute pressure) when ignition switch is ON| More than 5.1kPa (37.9mmH g, 1.5inHg)

Time needed for diagnosis:  320ms

Malfunction indicator light illumination:  Illuminates when malfunction occurs in 2 continuous driving cycles.

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