LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Genesis >> 2021 >> G80 2.5T Advanced, AWD >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System Diagnosis - 2.5L (6 Of 6) >> DTC P2251-00: O2 Sensor Reference Ground Circuit/Open (Bank 1 Sensor 1) >> DTC Information And Inspection >> DTC Description
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC Description

The ECM monitors front O2 sensor virtual ground voltage (Vg) and sets a DTC P225100 if front O2 sensor signal stuck is detected.

scientia non olet · About LEMON Manuals