I have a 07 2500 cummins, I went to change the tire size with the bullydog triple downloader and now the eng light is on as well as the abs one. The code that shows up is pd412,and it won't clear. If there is a way of fixing this problem so that I don't have to take it to my dealer as they aren't people friendly, and there is a month wait. If any one can help, i would appreciate it.