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Home >> Subaru >> 2019 >> WRX STI Limited >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 9 (Engine Control System (Diagnostics) (Except For STI) (2 Of 4)) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC P04AC: EVAP System (CPC) Purge Control Valve "B" Circuit Low >> Outline Of Diagnosis

Outline Of Diagnosis

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Detect open or short circuit of the purge control solenoid valve 2.

Judge as NG when the ECM output level differs from the actual terminal level.