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Home >> Hyundai >> 2018 >> Kona Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 148 (Engine Control System Diagnosis - 1.6L (3 Of 3)) >> DTC P2251-00: O2 Sensor Reference Ground Circuit/Open (Bank 1 / Sensor 1) >> DTC Information And Inspection >> DTC Description

DTC Description

WARNING: This page is about a different car, the 2021 Hyundai Kona. However, it is still accessible from the selected car via links, so may be relevant.

ECM assumes the ground circuit is open and shows P2251-00 when upstream O2 sensor is 1.49~1.53V and internal resistance gets high.

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