Thanks, I'll keep that in mind as it has happened twice when using the quick adjust and I just cleared the code and it did not come back yet. However the first time it happened the dash light did not come on. I was just connecting the Predator to look at something else and checked for any codes and ...

Not sure what to tell you. If you get a definitive answer let me know.

See this other post too. I notice it's been a Month since you posted and nobody has responded. Maybe it's a known issue?

http://www.diablosport.com/index.php?name=PNphpBB2&file=viewtopic&t=28908&highlight=2010+challenger+u0101

I received trouble code U0101 as well after only performing quick adjust to the TCM.

I purchased device never having had a trouble code. Loaded the 93 perf tune and no errors at all.

I installed a 180 thermostat CAI and catch can. Then installed the 93 CAI perf tune. I tried adjusting some of the ...