Component Inspection

Inspection Condition	(+) Probe		(-) Probe		Reference
Inspection Condition	Connector	Terminal	Connector	Terminal	Reference
Engine "ON" (Warm up condition).	HO2S (Bank1, Sensor2) connector	2 (ground)	HO2S (Bank1, Sensor2) connector	1 (signal)	Fig.1
Engine "ON" (Warm up condition).	HO2S (Bank1, Sensor2) connector	3 (power)	HO2S (Bank1, Sensor2) connector	4 (heater)	Fig.1

Courtesy of KIA MOTORS AMERICA, INC.

Good

No Good

Carefully re-do this troubleshooting guide steps.
If no problems were found with the circuits or connectors, replace the HO2S (Bank1, Sensor2) and go to "Verification of Repair " procedure.