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Home >> Subaru >> 2017 >> WRX STI >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (Diagnostics) (P0171 To P0685) (2.5L) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC P0451 EVAP System (CPC) Pressure Sensor/Switch Circuit Range/Performance >> Execution Condition
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Execution Condition

Secondary parameters Execution condition
Elapsed time after ignition switch is turned to ON ≥ 500 ms
and
< 60000 ms
Soaking time ≥ 60 s
Evaporative Leak Check Module vacuum pump Not in operation
Evaporative Leak Check Module switching valve Open
Purge control Not in operation
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