[Bank 1/Sensor 1]

Turn the ignition switch OFF and disconnect the battery negative (-) terminal.
Disconnect the connector (A), and then remove the sensor (B).
Heated oxygen sensor:

39.2 - 49.1 N.m (4.0 - 5.0 kgf.m, 28.9 - 36.2 lb.ft)

G12347297

G12347298