Hyundai Kona: 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 (Refer ...

Heated Oxygen Sensor (HO2S) Specifications

Specification HO2S [Bank 1/Sensor 1] (Linear type) Item Specification Heater Resistance (Ω) 2.4 - 4.0 [20°C (68°F)] ...

Other information:

Hyundai Kona (OS) 2018-2020 Service Manual: Drive Belt Tensioner Repair procedures
Removal and Installation 1. Remove the drive belt. (Refer to Timing System - "Dreve Belt") 2. Remove the alternator. (Refer to Engine Electrical System - "Alternator") 3. Rem ...

Hyundai Kona (OS) 2018-2020 Service Manual: Schematic diagrams
System Block Diagram Component Parts and Function Outline Component part Function Vehicle-speed sensor, ESP/ABS Control Module Converts vehicle speed to pulse. ECM Receives signals from sensor a ...