LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Kia >> 2021 >> Niro Plug-In Hybrid LXS >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System Diagnosis (PHEV) (3 Of 6) >> DTC P0420-00: Catalyst System Efficiency Below Threshold (Bank 1) >> System Inspection >> O2 Sensor Inspection
April 5, 2026: LEMON Manuals is launched! Read the announcement.

O2 Sensor Inspection

Inspection Condition (+) Probe (-) Probe Reference
Connector Terminal Connector Terminal
  1. Engine "ON".
HO2S (bank1, sensor2) connector 1 (signal) HO2S (bank1, sensor2) connector 2 (ground) Fig. 1
G13354967Courtesy of KIA MOTORS AMERICA, INC.

Good 

No Good