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Home >> Subaru >> 2019 >> WRX STI >> Repair and Diagnosis (Single Page) >> Engine Performance >> Testing & Diagnosis >> Engine Control System (Diagnostics) (STI) (4 Of 4) >> Diagnostic Procedure With Diagnostic Trouble Code (DTC) >> DTC P24B9: EVAP System Leak Detection Pump Pressure Sensor 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 

Malfunction Criteria Threshold Value
|Evaporative Leak Check Module pressure sensor output value - intake manifold pressure (absolute pressure) when ignition switch is ON| ≥6532.8Pa (49 mmHg, 1.9 inHg)

time needed for diagnosis:  320 ms

Malfunction indicator light illumination:  Illuminates as soon as a malfunction occurs.