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2008
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Outback Base, Standard
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Repair and Diagnosis (Single Page)
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Engine Performance
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Testing & Diagnosis
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Diagnostic Trouble Code (DTC) Detecting Criteria (H4SO)
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Diagnostic Trouble Code (DTC) Detecting Criteria
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DTC P1491 Positive Crankcase Ventilation (Blow-By) Function Problem
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Component Description
Component Description
Fig 1: Diagnosis Outline For Positive Crankcase Ventilation (Blow-By) Function Problem
Courtesy of SUBARU OF AMERICA, INC.
Courtesy of SUBARU OF AMERICA, INC.