WARNING: This page is about a different car, the 2008 Acura TL and 2007 Acura TL. However, it is still accessible from the selected car via links, so may be relevant.
Disconnect FTP sensor 3P connector (A).
Fig 1: Identifying FTP Sensor And 3P Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Remove the FTP sensor (B).
Install the parts in the reverse Order of removal with a new O-ring (C).