3rd Gen Ram Tech2002-2008 Rams: This section is for TECHNICAL discussions only, that involve the 2002 through 2008 Rams Rams. For any non-tech discussions, please direct your attention to the "General discussion/NON-tech" sub sections.
Under my truck...i have one sensor before the car and i have one after it.....thats all i can find.
Try the other side You have dual exhaust to the point where the two pipes come together to connect to the CAT back. THough I am not sure if it comes together and through one CAT or it has two CATs. I guess if it just has one CAT then yes, 2 O2s would be right. 1 before and 1 after.