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Subaru
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2016
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WRX Base
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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 (H4DOTC) (WRX)
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Diagnostic Trouble Code (DTC) Detecting Criteria
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DTC P0031 A/F/O2 Heater Control Circuit Low Bank 1 Sensor 1
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Execution Condition
Execution Condition
Secondary Parameters
Execution condition
Battery voltage
≥ 10.9 V
Front oxygen (A/F) sensor heater control duty
≤ 80%