Secondary HO2S Replacement
Secondary HO2S ReplacementSpecial Tools Required
O2 sensor socket wrench. Snap-on YA8875, SP Tools 93750, or equivalent, commercially available
1. Remove the WU-TWC stay (A).
2. Disconnect the secondary HO2S 4P connector (A), then remove the secondary HO2S (B).
3. Install the parts in the reverse order of removal.