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Kia
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2004
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Rio Base, Automatic
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Repair and Diagnosis
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Engine Performance
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System
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Fuel System & Fault Isolation
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DTC Troubleshooting
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DTC P0031: Ho2S Heater Circuit Low (Bank 1, Sensor 1)
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General Information
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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.