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

Hyundai Sonata LF 2014-2019 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 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 to “Intake And Exhaust System” in EM group). 3. Disconnect ...

Heated Oxygen Sensor (HO2S) Specifications
Specification HO2S [Bank 1/Sensor 1] (Linear type) ItemSpecificationHeater Resistance (?)2.4 ~ 4.0 [20°C(68°F)] ItemSpecificationHeater Resistance (?)Approx. 9.0 [20°C(68°F)] HO2S [Ba ...

Other information:

Hyundai Sonata LF 2014-2019 Service Manual: Components and Components Location
Component Location 1. DDM (Driver Door Module)2. ADM (Assist Door Module)3. SJB (Smart Junction Block)4. Door lock knob5. Trunk lid actuator6. Door latch module7. Door lock/unlock switch8. RLDM (Rear Left Door Module)9. RRDM (Rear Right Door Module) ...

Hyundai Sonata LF 2014-2019 Service Manual: Gear Actuator Assembly Components and Components Location
Components 1. Gear actuator assembly2. Shift motor (Even)3. Shift motor (Odd)4. Select solenoid (Odd)5. Select solenoid (Even) ...

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