What would cause the 2 gear in transmission to not work properly

Hello, diagnostic trouble codes related to the oxygen sensor will not have any influence on transmission shifting. Your concern will need to be looked at by a technician with experience with these vehicles, who can utilize a diagnostic tool that is capable of monitoring shift commands and input information to determine if the fault lies electronically or hydraulically. Seek local guidance at a shop near you: Use this link to find some shops near you that can help with your concern: www.repairpal.com/repair-shops