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Subaru
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2013
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Legacy Premium, Automatic CVT Trans
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Repair and Diagnosis (Single Page)
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Engine Performance
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System
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Diagnostic Trouble Code (DTC) Detecting Criteria (H4DO)
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Diagnostic Trouble Code (DTC) Detecting Criteria
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DTC P1493 EGR Solenoid Valve Signal #1 Circuit Malfunction (High Input)
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Outline Of Diagnosis
Outline Of Diagnosis
Detects open or short circuit of EGR.
Judge as NG when the ECM output level differs from the actual terminal level.