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Home >> Kia >> 2016 >> Optima Hybrid >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (3 Of 3) (HEV) >> DTC P2251: O2 Sensor Reference Ground Circuit/Open (Bank 1 Sensor 1) >> DTC Information >> DTC Description

DTC Description

The PCM monitors front O2 sensor reference voltage circuit(VN) and sets DTC P2251 if front O2 sensor signal stuck is detected.

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