Picked up a used Accu Pro thinking I would use it to recalibrate my seedometer after putting on 35s and well it acted liked it worked but I get a check engine light, sway bar light and no speedo function.

Any ideas on how to revert back? Having the accu pro return to stock doesn't fix the issue... Also disconnected the battery for a while and that did not work.

It was cheap and well I guess I got what I paid for...

 

Found my own solution just in case anyone else encounters. I had to program it back to 31" tires and 4.10 gears and then all of the check lights and DTCs went away. I was also able to return to stock after that. Guess I need to get a Procal and not this old crap device.