I changed the battery, just to make sure. Still getting the code. Any ideas?

I loaded my stock tune back into my PT and when I did I got a C2100 code. Any idea what happened or how to fix it. I reloaded the Diablo tune and I still get the code. Car runs great and no CEL, just the C2100. I did out a new battery in just to see if that would fix the problem and it didn't do ...

I'm using the L.E.D.'s at the top as a shift light. Go in the settings, down to alerts and turn that on. Then go to the RPM gauge customize menu ⚠️ turn on alerts and sound then set alert to desired shift point. I have mine at 5500 to allow time to react. Hope this is helpful and works for you.

I ...

Is there a shift light on the Trinity 2?

I see that the T1 had it but I tried those instructions for the T2 and can't make it happen.