LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Kia >> 2019 >> Stinger Base, AWD >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System Diagnosis - 2.0L (6 Of 6) >> DTC P2251-00: O2 Sensor Reference Ground Circuit/Open (Bank 1 Sensor 1) >> Component Inspection
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Component Inspection

Inspection Condition (+) Probe (-) Probe Reference
Connector Terminal Connector Terminal
  1. Ignition "ON", engine "ON"
HO2S (B1/S1) connector 2 (Nernst Voltage) HO2S (B1/S1) connector 1 (Virtual Ground) Figure below
HO2S (B1/S1) connector 3 (Pumping Current) HO2S (B1/S1) connector 6 (Trim Resistor)
G12784336Courtesy of KIA MOTORS AMERICA, INC.

Good 

No Good