Hyundai Ioniq: Engine Control System / Heated Oxygen Sensor (HO2S). Description and operation

Hyundai Ioniq (AE) 2017-2025 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 Engine Mechanical System - "Intake Manifold")3...

Heated Oxygen Sensor (HO2S). Specifications

SpecificationHO2S [Bank 1 / Sensor 1] Item Specification Heater Resistance (Ω)2.4 - 4.0 [20°C (68°F)]HO2S [Bank 1 / Sensor 2] (Binary Type) A/F Ratio (λ) Output Voltage (V) RICH0...

Other information:

Hyundai Ioniq (AE) 2017-2025 Owner's Manual: Plug-in Hybrid Vehicle Instrument Panel Overview

1. Steering wheel audio controls/Bluetooth® wireless technology hands-free controls 2. Instrument cluster 3. Horn 4. Driver’s front air bag 5. Cruise controls/Smart cruise controls 6. Engine Start/Stop button 7. Light control/Turn signals 8. Wiper/Washer 9...

Hyundai Ioniq (AE) 2017-2025 Service Manual: Special service tools

Special Service Tools Tool (Number and Name) Illustration Use 09568-1S100Saperate the ball joint from the front alxe09546-3X100 Shock absorber lock nut removal toolUsed for remove the shock absorber lock nut...