Hyundai Elantra: Engine Control System / Heated Oxygen Sensor (HO2S) Description and Operation

Hyundai Elantra AD (2016-2020) Service Manual / Engine Control/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 Catalytic Converter. It 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. Disconnect the knock sensor connector (A). 3. Remove the intake manifold. (Refer to Engine Mech ...

Heated Oxygen Sensor (HO2S) Specifications
Specification HO2S [Bank 1/Sensor 1] (Linear type) ItemSpecificationHeater Resistance (?)2.4 ~ 4.0 [20°C(68°F)] HO2S [Bank 1/Sensor 2] (Binary type) A/F Ratio (?)Output Voltage(V)RICH0.6 ~ 1 ...

Other information:

Hyundai Elantra AD (2016-2020) Service Manual: Roof Side Molding Repair procedures
Replacement     • Put on gloves to prevent hand injuries.     • When removing with a flat-tip screwdriver or remover, wrap protective tape around the tools to prevent damage to components. 1. Using a screwdriver or remover, remove the roof ...

Hyundai Elantra AD (2016-2020) Service Manual: Mode Control Actuator Specifications
Specifications Door positionVoltage (V)Error detectingMax. cooling0.3 ± 0.15 Low voltage : 0.1V or lessMax. heating4.7 ± 0.15 High voltage : 4.9V or more ...

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