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Subaru
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2006
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Legacy GT spec.B
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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 (H4DOTC)
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Diagnostic Trouble Code (DTC) Detecting Criteria
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DTC P0172 System Too Rich (Bank 1)
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Fail Safe
Fail Safe
Rich side malfunction
Purge control solenoid valve control: Not allowed to purge.
Heavy fuel judgment control: Not allowed to carry out the heavy judgment.