new CEL?

What kind of scanner did you use? When my MIL came on after I did my mid-pipe, the first scanner didn't pick up a code, but it would erase it. I can't remember if 01's use the CAN protocol or not, but there's an Equus reader specifically designed for that.. or the big orange ones they sell at Autozone work too. If it's not the scanner, I have no clue.