Operation CHARM: Car repair manuals for everyone.
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!

Link: lemon-manuals.la
If it fails: lemon-manuals.org.ua

Or, hide this message: temporarily or permanently

Secondary HO2S

Secondary HO2S Replacement

Special Tools Required
O2 sensor socket wrench. Snap-on YA8875, SP Tools 93750, or equivalent, commercially available

Front Bank (Bank 2)




1. Disconnect the front secondary HO2S 4P connector (A), then remove the front secondary HO2S (B).
2. Install the parts in the reverse order of removal.

Rear Bank(Bank 1)




1. Disconnect the rear secondary HO2S 4P connector (A), then remove the rear secondary HO2S (B).
2. Install the parts in the reverse order of removal.