So I got the newest codes today. P0172 and p0175. 175 is new. Any ideas for why it would be both sides?

 

Well first you need to look them up, - guess I could for now,-

P0171 System Adaptive fuel too lean (Bank 1)
P0172 System Adaptive fuel too rich (Bank 1)
P0174 System Adaptive fuel too lean (Bank 2)
P0175 System Adaptive fuel too rich (Bank 2)

So you just replaced the O2's then.... before your last post? That was the recommendation since that's ALWAYS the case with the DTC's you've had in the past. You can't dodge not doing it.

 

No I havent. Should all be replaced?

 

Also Im familiar with these codes. 171 and 172 of them have been the problems that I have been having. I was just asking for an opinion on why bank 2 would be having a problem as its only been bank 1 throwing codes up until now. Jbrew do you think the problem has gotten worse or that the other o2 sensor has gone out?
I will be changing the o2 sensors soon. Its a time and money thing.