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: Identifying SST
Courtesy of HYUNDAI MOTOR AMERICA

Fig 2: HO2S Connector (B1S1)
Courtesy of HYUNDAI MOTOR AMERICA

Fig 3: HO2S Sensor (B1S1)
Courtesy of HYUNDAI MOTOR AMERICA