My check engine light came on today and I checked the code when I got home. I've got a manual tranny b16a in a crx. I checked the code and I'm not sure if its a code 3 or a code 30 but the code 30 is A/T FI Signal A but I'm not sure what that is.

 

ttt

 

Then you most likley wouldn't have that code if its for an A/T.....