Kia Sportage: Engine Control System / Heated Oxygen Sensor (HO2S) Description and operation
Heated Oxygen Sensor (HO2S) consists of zirconium and alumina and is installed
both upstream and downstream of the Manifold Catalytic Converter. The sensor
output voltage varies in accordance with the air/fuel ratio.
The sensor must be hot in order to operate normally. To keep it hot, the sensor
has a heater which is controlled by the ECM via a duty cycle signal. When the
exhaust gas temperature is lower than the specified value, the heater warms
the sensor tip.

Specification
HO2S [Bank 1/Sensor 1]
Item
Specification
Heater Resistance (Ω)
2.5 - 4.0 [20°C(68°F)]
HO2S ...
Circuit Diagram
Harness Connector
[Bank 1 / Sensor 1]
[Bank 1 / Sensor 2]
...
Other information:
Inspection
Air bag module
If any improper parts are found during the following inspection, replace the
airbag module with a new one.
Never attempt to measure the circuit resistance of the airbag modul ...
To defog inside windshield
1. Set the fan speed to the desired position.
2. Select desired temperature.
3. Select the or
position.
4. The outside (fresh) air and air conditioning will be selected automatically.
If the air conditioning and/or outside (fresh) air position are not selected
...