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

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