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 logical successor to CHARM, I recommend you try it!

Link: lemon-manuals.la

Pre HO2S

NOT READY/READY
The scan tool will display Not Ready until the VCM has commanded closed loop. The HO2S is then considered Ready for operation.