Kia Optima: Heated Oxygen Sensor (HO2S) Description and Operation - Engine Control System - Engine Control/Fuel SystemKia Optima: Heated Oxygen Sensor (HO2S) Description and Operation

Description
Heated Oxygen Sensor (HO2S) consists of zirconium and alumina and is installed both upstream and downstream of the Catalytic Converter. It 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.


Knock Sensor (KS) Repair procedures
Removal 1. Turn the ignition switch OFF and disconnect the battery negative (-) terminal. 2. Drain the engine coolant (Refer to “Cooling System” in EM group). 3. Remove the radiator u ...

Heated Oxygen Sensor (HO2S) Specifications
Specification HO2S [Bank 1/Sensor 1] (Linear type) ItemSpecificationHeater Resistance (?)2.5 ~ 4.0 [20°C(68°F)] HO2S [Bank 1/Sensor 2] (Binary type) A/F Ratio (?)Output Voltage(V)RICHApp ...

See also:

Mirror Repair procedures
Replacement Outside Rear View Mirror Replacement     • When prying with a flat-tip screwdriver, wrap it with protective tape, and apply protective tape around t ...

Replacement
1. Remove the rear wheel & tire. Tightening torque:88.3 ~ 107.9N.m (9.0 ~ 11.0kgf.m, 65.1 ~ 79.6lb-ft) ...

Side Impact Sensor (SIS) Repair procedures
Removal Pressure Side Impact Sensor     • Removal of the airbag must be performed according to the precautions/procedures described previously. • Be ...

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