Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

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Secondary HO2S Replacement

Secondary HO2S Replacement

Special 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.