Hi all, I just entered the co mode after the diag screen and it comes up with C1 then I press select and reset again and it comes up with 21.

So the dash says C1 21 does this sound right

Its a 2010 XTX with mtc cans, baffles out

Also why does my bros 2004 model go to C1 or C2 my 2010 only has C1