Secondary HO2S Replacement

Special Tools Required 

O2 sensor wrench. Snap-on SWR2, Snap-on YA9375, or equivalent, commercially available

1. Pull back the carpet from the floor rail under the front edge of the front passenger seat to expose the secondary H02S 4P connector that is attached to the floor rail.
2. Disconnect the secondary H02S 4P connector (A), under the passenger's seat.
   Fig 1: Identifying Secondary H02S 4P Connector

   Courtesy of AMERICAN HONDA MOTOR CO., INC.
3. Remove the secondary H02S (A), and the clips (B).
   Fig 2: Secondary H02S And Clips w/Torque Spec.

   Courtesy of AMERICAN HONDA MOTOR CO., INC.
4. Install the parts in the reverse order of removal.