i ran a diagnostic on the max's ecu and got 2 codes:
05-03
03-07

These two errors are in the front right o2 sensor, and the closed loop control. can any one tell me what these are, and if i can fix them myself???

 

I'm not sure what the loop control is. I had to replace two of my O2 sensors before and the dealer wanted $300 each to install them. What I did was buy the sensors from the dealer (about $180 each) and got them put on by another shop for $40 for the two. So if you can find someone to put them on for you, you will save a lot of money. I was told that the repairs can be done by yourself. But after watching the mechanic do the work, there is no way that I would have been able to do it. If you run a search on this site for "replace 02 sensors" you should shown the link to the page with the instructions. I hope that everything works out for you.