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Home >> Subaru >> 2016 >> WRX STI >> Repair and Diagnosis >> Engine Performance >> System >> Diagnostic Trouble Code (DTC) Detecting Criteria >> Diagnostic Trouble Code (DTC) Detecting Criteria >> DTC P04DB Crankcase Ventilation System (PCV) Disconnected >> 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
Positive crankcase ventilation diagnosis voltage ≥ 5.9 V

Time Needed for Diagnosis:  2500 ms