Kia Cee'd: 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.

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 Service Manual: Front Strut Assembly Components and components location
Components   1. Strut assembly 2. Insulator 3. Strut bearing 4. Spring upper pad 5. Coil spring 6. Dust cover 7. Spring lower pad ...

Kia Cee'd JD Service Manual: Alternator Components and components location
Components   1. OAD (Overrunning Alternator Decoupler) 2. Front Bracket 3. Front Bearing 4. Stator 5. Rotor 6. Rear Bearing 7. Rear Bracket 8. Brush Holder Assembly 9. Through Bolt 10. Rectifier Assembly 11. Rear Cov ...