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Secondary HO2S Replacement

Special Tools Required 

02 sensor socket wrench. Snap-on YA8875, SP Tools 93750, or equivalent, commercially available

NOTE: When the secondary HO2S is replaced the third HO2S must be replaced at the same time (2002-2006 M/T models only).
  1. Disconnect the secondary HO2S 4P connector (A), and remove the secondary HO2S (B).
    Fig 1: Removing Secondary HO2S
    G03680958Courtesy of AMERICAN HONDA MOTOR CO., INC.
  2. Install the secondary HO2S in the reverse order of removal.
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