Bank 2/Sensor 1

Turn the ignition switch OFF and disconnect the battery negative (-) cable.
Remove the LH air cleaner.
(Refer to Engine Mechanical System - "REMOVAL AND INSTALLATION ")
Remove the heated oxygen sensor connector (A).

Courtesy of HYUNDAI MOTOR AMERICA
Remove the heated oxygen sensor (A).
NOTE:
- Note that the SST (Part No.: 09392-1Y100 or 09392-2H100) is useful when removing the heated oxygen sensor.
Tightening Torque:

35.3 - 45.1 N.m (3.6 - 4.6 kgf.m, 26.0 - 33.3 lb-ft)

Courtesy of HYUNDAI MOTOR AMERICA