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2021
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Niro Plug-In Hybrid LXS
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Repair and Diagnosis (Single Page)
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Engine Performance
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System
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Engine Control System Diagnosis (PHEV) (5 Of 6)
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DTC P2251-00: O2 Sensor Reference Ground Circuit/Open (Bank 1 Sensor 1)
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DTC Information
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DTC Description
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DTC Description
If the open in virtual ground circuit of the linear HO2S (up) is detected, the ECM sets DTC P225100.