Kia Optima: Heated Oxygen Sensor (HO2S). Description and OperationThe 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.

Installation
Heated Oxygen Sensor (HO2S). SpecificationsRemoval
In case of removing the high pressure fuel pump,
high pressure fuel pipe, delivery pipe, and injector, there may be injury
caused by ...
Mode selection
The mode selection button controls the direction of the air flow through the
ventilation system
Face-Level (B, C,
D, E, F)
Air flow is directed toward the upper body and face. Additionally, ea ...
Knock Sensor (KS). Specifications
Specification
Item
Specification
Capacitance (pF)
850 ~ 1,150
...