”Check Engine” 100 miles after IMS retrofit

[Stl-986]

I liken you request to my end users..."Something is wrong with my computer can you tell me what the issue is?"

Without information no one can offer any help. countless reasons why the MIL would be on, that is why there are codes to be read, which will give you an indication of what to begin your search for but that doesn't mean a specific code will tell you exactly what the issue is.