Repair Procedures: Removal: Notes

Turn the ignition switch OFF and disconnect the battery negative (-) cable.
Disconnect the connector (A), and then remove the sensor (B).
Tightening Torque:

39.2 - 49.0 N.m (4.0 - 5.0 kgf.m, 28.9 - 36.1 lb-ft)

NOTE:

Note that the SST (Part No.: 09392-1Y100 or 09392-2H100) is useful when removing the heated oxygen sensor.

Courtesy of HYUNDAI MOTOR AMERICA