Secondary HO2S Replacement

Special Tools Required 

O2 sensor wrench, Snap-on YA8875 or SWR2, or equivalent, commercially available

1. Disconnect the secondary HO2S (Sensor 2) 4P connector (A).
   Fig 1: Identifying Secondary Ho2S (Sensor 2) 4P Connector

   Courtesy of AMERICAN HONDA MOTOR CO., INC.
2. Remove the secondary HO2S (Sensor 2) (A).
   Fig 2: Secondary HO2S (Sensor 2) With Torque Specifications

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