Still getting code's

[Gov na]

Hey Rovers', has anyone gotten the code's, C1A20-64, and CII31-92, and after replacing the compressor filters and media and still got these codes? Any idea on moving forward to fix this??
also I had gotten code's, P0036-00/ and P0056-00 and replaced all 4 O2 sensors and I'm still getting these, could anyone help with these so I can figure out what I'm doing wrong??
Thank you, Rover Clan.

2007 LR3 SE with 119200 miles.

 

[remember5]

You may want to search the forum, there are a lot of postings related to those codes. I haven't had to replace my O2 sensors so not much help there unless it's a wiring issue and not the sensors themselves.

 

[Gov na]

Thanks for the reply, I'll have to surf the site for sure.