My code reader doesn't do CAN protocol. I see a couple codes via the key/odometer method, I would like to delete these DTCs because I know their cause and they aren't a real issue, and I am sick of looking at the check engine light. I tried disconnecting the batteries but the codes stayed in place. Are these stored in nonvolatile ram in the ECM or can I somehow delete these without buying another code reader?

 

There was a thread on this but I can not find it. I thought it said to disconnect batteries and turn the key on for about 30 seconds.

 

I haven't had to do it on this truck yet {knock on wood}, but can't you just go to your local auto parts store like Autozone or Advance and have them clear it for you?

 

I think the new ones need a scanner/coder/clear

 

if the problem has been corrected, the light and code will clear itself after several heat up/cool down cycles.