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

Hyundai Ioniq (AE) 2017-2024 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) 2017-2024 Service Manual: Radiator. Repair procedures

Removal and Installation1.Loosen the drain plug, and drain the engine coolant. Remove the reservoir cap to help drain the coolant faster.(Refer to Cooling System - "Coolant")2.Remove the cooling fan.(Refer to Cooling System - "Cooling Fan")3.Disconnect the radiator upper hose (A) and lower hose (B)...

Hyundai Ioniq (AE) 2017-2024 Owner's Manual: Check Lane Keeping Assist (LKA) system, Check Driver Attention Warning (DAW) system,

Check Lane Keeping Assist (LKA) system (if equipped) Either message is displayed if there is a problem with the Lane Keeping Assist (LKA) System. Have the vehicle inspected by an authorized HYUNDAI dealer. Check Driver Attention Warning (DAW) system This warning message is displayed if there is a problem with the Driver Attention Warning (DAW) system...