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2021
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K5 EX
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Repair and Diagnosis
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Engine Control System Diagnosis - 1.6L (6 Of 7)
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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
DTC Description
If the open in virtual ground circuit of the linear HO2S (up) is detected, the ECM sets DTC P225100.