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.

Fig 1: Locating SST (Part No.: 09392-1Y100)
Courtesy of HYUNDAI MOTOR AMERICA

Fig 2: Locating Heated Oxygen Sensor Connector
Courtesy of HYUNDAI MOTOR AMERICA

Fig 3: Locating Heated Oxygen Sensor
Courtesy of HYUNDAI MOTOR AMERICA