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Home >> Subaru >> 2006 >> Legacy GT spec.B >> Repair and Diagnosis (Single Page) >> Engine Performance >> Testing & Diagnosis >> Diagnostic Trouble Code (DTC) Detecting Criteria (H4DOTC) >> Diagnostic Trouble Code (DTC) Detecting Criteria >> DTC P0448 Evaporative Emission Control System Vent Control Circuit Shorted >> Diagnostic Method

Diagnostic Method

Judge as OK and clear the NG when the malfunction criteria below are met.

Judgment Value 

JUDGMENT VALUE

Malfunction Criteria Threshold Value
Ignition switch ON
Battery voltage ≥ 10.9 V
After engine starting 1 second or more
Terminal output voltage when ECM outputs ON signal Low