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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 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 to keep their performance matched.

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