Dtc codes

[BOWHIKER]

Been reading a little bit on the different codes and how to find them . My question is if there ever is something like this does it show up on my speedo or do i have to go looking to see if there is ever a code ? Just wondering if i need to search every once in a while or if they show up .

 

[Hoople]

As it pertains to 2009 Delphi. It depends on the code. Historical codes won't show a check engine light while riding. When you boot your bike the check engine light will come on then go off. That's good. If it comes on, goes off, then comes back on, then off again , you have a historical code in the error log.