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Home › Kia › 2021 › Rio LX › Repair and Diagnosis › Engine Performance › System › Engine Control System Diagnosis (6 Of 6) › DTC P2251-00: O2 Sensor Reference Ground Circuit/Open (Bank 1 Sensor 1) › DTC Information › DTC Description

DTC Description

The ECM/PCM sets DTC P225100, when it detects no sensor signal. (monitoring the virtual ground)

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