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Hyundai
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2004
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Accent Base
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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 Troubleshooting Procedures
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DTC P0031: O2 Sensor Heater Circuit Low (Bank 1, Sensor 1)
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DTC Description
July 1:
So it begins
. Don't worry, this is not in the correct legal jurisdiction!
DTC Description
PCM sets DTC P0031 if the PCM detects that the front HO2S heater control line is short to ground.