Can you tell me instructions for checking my engine codes by using and OBD II car computer reader?
user
Sure, did you plug in the reader?  Did you make sure the reader is turned on?  If not, you should do that now.
assistant
Can you tell me instructions for checking my engine codes by using and OBD II car computer reader?
user
Are you a DIY-er, or are you looking to have the oil change shop check your codes for you?
assistant
Can you tell me instructions for checking my engine codes by using and OBD II car computer reader?