A/F Sensor Replacement

Special Tools Required 

O2 Sensor Wrench Snap-on S6154, commercially available

1. Disconnect the A/F sensor 4P connector (A), then remove the A/F sensor (B).
   Fig 1: A/F Sensor And 4P Connector With Torque Specifications

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