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Home › Hyundai › 2009 › Tucson GLS, Automatic › Repair and Diagnosis (Single Page) › Engine Performance › System › DTC Troubleshooting Procedures (2.0L) › Troubleshooting for DTC › P0138 O2 Sensor Circuit High Input (Bank 1/Sensor 2) › DTC Description

DTC Description

PCM sets DTC P0138 if the PCM detects signal voltage higher than the possible range of a properly operating rear heated oxygen sensor (HO2S).