WARNING: This page is about a different car, the 2021 Hyundai Kona. However, it is still accessible from the selected car via links, so may be relevant.
[Bank 1/Sensor 1]
Turn the ignition switch OFF and disconnect the battery negative (-) cable.
Disconnect the connector (A), and then remove the sensor (B).
NOTE:
Note that the SST (Part No.: 09392-1Y100) is useful when removing the heated oxygen sensor.
Courtesy of HYUNDAI MOTOR AMERICA
Courtesy of HYUNDAI MOTOR AMERICA
[Bank 1/Sensor 2]
Turn the ignition switch OFF and disconnect the battery negative (-) cable.
Disconnect the connector (A), and then remove the sensor (B).