need help with some codes

[bnoyesfam]

Hi All

Recently purchased a 97 non locked LX450 with 155K on it. The CE light came on and I pulled the codes, they are as follows:

P040103
PO70101
P070102

The CE light came on about a week ago with the 401 code. I have recently replaced the EGR valve and the code went away for about a day then showed up the the 701 codes tonight.

The car seems to run fine, just a little rough. My wife had a little trouble starting it before I replaced the egr now its starts fine but still showing the code.

I been reading this board for a while, learning all I can. Seems like a great group of people, any help would be appreciated.

Thanks!