Kia Cee'd: Engine Control System / Heated Oxygen Sensor (HO2S) Description and operation

Kia Cee'd JD Service Manual / Fuel System / Engine Control System / 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.

Knock Sensor (KS) Repair procedures
Removal 1. Turn the ignition switch OFF and disconnect the battery negative (-) cable. 2. Remove the intake manifold. (Re ...

Heated Oxygen Sensor (HO2S) Specifications
Specification HO2S [Bank 1/Sensor 1]   Item Specification Heater Resistance (Ω) 2.4 ~ 4.0 [20°C(68°F)] ...

Other information:

Kia Cee'd JD Owners Manual: Malfunction indicator
The VSM can be deactivated even if you don’t cancel the VSM operation by pressing the ESC OFF button. It indicates that a malfunction has been detected somewhere in the EPS (Electronic Power Steering) system or VSM system. If the ESC indicator light () or EPS warning light remains ...

Kia Cee'd JD Owners Manual: Finish maintenance
Washing To help protect your vehicle’s finish from rust and deterioration, wash it thoroughly and frequently at least once a month with lukewarm or cold water. If you use your vehicle for off-road driving, you should wash it after each offroad trip. Pay special attention to the remov ...

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