You might need to walk me through that one Mike not real sure on how to do that

All connections are good, I've done everything I can think of, not sure what the problem is, probably will be calling Diablo in the morning, to see if I need to send pcm back, I appreciate the advice Mike, anything else you can think of would be great

I recently purchased unlocked pcm and tuner from diablosport. I have a check engine light code that won't come off. I've tried everything to clear it including trying to clear the code with a perfetional scan tool, truck runs good I just don't want to stare at it. Truck is a 2015 ram 2500 6.4 hemi ...