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Home › Hyundai › 2004 › Accent Base › Repair and Diagnosis › Engine Performance › System › Engine Control System Diagnosis (1 Of 2) › DTC Troubleshooting Procedures › DTC P0031: O2 Sensor Heater Circuit Low (Bank 1, Sensor 1) › DTC Description

DTC Description

PCM sets DTC P0031 if the PCM detects that the front HO2S heater control line is short to ground.

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