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Hyundai
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2009
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Elantra GLS, Standard
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Repair and Diagnosis
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DTC Troubleshooting Procedures
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DTC P0031 Ho2S Heater Circuit Low (Bank 1/Sensor 1)
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DTC Description
DTC Description
ECM sets DTC P0031 if the ECM detects that the front HO2S heater control circuit is short to ground.