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Hyundai
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2012
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Accent GLS, Automatic Trans
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Repair and Diagnosis
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Engine Performance
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System
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Engine Control System Diagnosis (1 Of 2)
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DTC P0031: HO2S Heater Control Circuit Low (Bank 1/Sensor 1)
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General Information
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DTC Description
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DTC Description
When ECM detects short to ground in the heater control circuit (S1), ECM sets DTC P0031.