Rear Bank (Bank 1)

Remove the engine cover (see step 1 under IGNITION COIL REMOVAL/INSTALLATION ).
Disconnect the rear A/F sensor 8P connector (A), then remove the rear A/F sensor (B).

Fig 1: Rear A/F Sensor With Torque Specifications
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Install the parts in the reverse order of removal.