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

Hyundai Santa Fe (TM) 2019-2024 Service Manual / Engine Control/Fuel System / 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. 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...

    Heated Oxygen Sensor (HO2S). Specifications

    Specification HO2S [Bank 1 / Sensor 1] [Euro-V] Item Specification Heater Resistance (Ω) 2...

    Other information:

    Hyundai Santa Fe (TM) 2019-2024 Service Manual: Components and components location

    Components 1. Supplemental Restraint System Control Module (SRSCM) 2. Gravity side impact sensor (G-SIS) _ C pillar 3. Gravity side impact sensor (G-SIS) _ B pillar 4. Front impact sensor (FIS) [RH] 5...

    Hyundai Santa Fe (TM) 2019-2024 Service Manual: Fuel Filler Door Release Actuator. Repair procedures

    Removal 1. Remove the left luggage side trim. (Refer to Body - "Luggage Side Trim") 2. Disconnect the connector (A) and then remove the release actuator (B). 3...


    Air bag collision sensors


    To reduce the risk of an air bag deploying unexpectedly and causing serious injury or death:

    Do not hit or allow any objects to impact the locations where air bags or sensors are installed. Do not perform maintenance on or around the air bag sensors. If the location or angle of the sensors is altered, the air bags may deploy when they should not or may not deploy when they should. Installing bumper guards with nongenuine Hyundai or non-equivalent parts may adversely affect the collision and airbag deployment performance. Press the Engine Start/Stop button to the OFF or ACC position and wait for 3 minutes when the vehicle is being towed to prevent inadvertent air bag deployment. Have all air bag repairs performed by an authorized HYUNDAI dealer.

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