Kia Optima: Heated Oxygen Sensor (HO2S). Description and Operation - Engine Control System - Engine Control/Fuel System - Kia Optima TF 2011-2019 Service ManualKia 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 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.


Installation
Х Install the component with the specified torques. Х Note that internal damag ...

Heated Oxygen Sensor (HO2S). Specifications
Specification HO2S [Bank 1/Sensor 1] Item Specification Heater Resistance (Ω) 2.5 ~ 4.0 [20∞C(68∞F)] HO2S [Bank 1/Sensor 2] ...

See also:

Tachometer
The tachometer indicates the approximate number of engine revolutions per minute (rpm). Use the tachometer to select the correct shift points and to prevent lugging the engine and/or overrevvin ...

SS-A Solenoid Valve(ON/OFF). Description and Operation
Description SS-A solenoid valve is attached to the valve body and is an on/off solenoid valve that is used to change gears. SS-A Solenoid valve(ON/OFF) is installed at valve body. ...

Opening the hood
1. Pull the release lever to unlatch the hood. The hood should pop open slightly. WARNING Open the hood after turning off the engine on a flat surface, shifting the shift lever to the P(Park) p ...

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