Kia Cadenza YG: Engine Control System / Heated Oxygen Sensor (HO2S) Description and Operation

Kia Cadenza YG 2016-2021 Service Manual / Engine Control / Fuel System / Engine Control System / Heated Oxygen Sensor (HO2S) Description and Operation

Description
Heated Oxygen Sensor (HO2S) consists of the zirconium and the alumina and is installed on upstream and downstream of the Warm-up Catalytic Converter (WCC).
After it compares oxygen consistency of the atmosphere with the exhaust gas, it transfers the oxygen consistency of the exhaust gas to the ECM. When A/F ratio is rich or lean, it generates approximately 1V or 0V respectively. In order that this sensor normally operates, the temperature of the sensor tip is higher than 370°C (698°F). So it has a heater which is controlled by the ECM duty signal.
When the exhaust gas temperature is lower than the specified value, the heater warms the sensor tip.

    Removal [Knock Sensor #1 (Bank 1)] 1. Turn the ignition switch OFF and disconnect the battery negative (-) cable. 2. Disconnect the knock sensor connector (A).

    Specification A/F Ratio (λ)Output Voltage(V)RICHMin. 0.8LEANMax. 0.1 ItemSpecificationHeater Resistance (Ω)3.3 ~ 4.1[20°C(68°F)]

    Other information:

    Kia Cadenza YG 2016-2021 Service Manual: Specifications

    Specification ItemSpecificationUltrasonic sensorVoltage ratingDC 12 VDetecting range30 cm ~ 120 cmOperation voltageDC 9 ~ 16 VOperation currentMAX 300 mAOperation temperature-30°C ~ +80°C (-22°C ~ +176°C)Operation frequency48 ± 5 KHzEffective operating velocity10 KPH (6.

    Kia Cadenza YG 2016-2021 Service Manual: Start/Stop Button Repair procedures

    Removal 1. Disconnect the negative (-) battery terminal. 2. Using a screw driver or remover, remove the center fascia lower panel (A). 3. Remove the in-car hose (A) and disconnect the connectors (B) from the heater & A/C control unit. 4.

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