Code 61 is what you want. Code 61 means END OF LINE. If there are any codes like 31 or 32 you will still get 61 at the end.
Now here is a dumb question. Is the smaller inside are fillter in right? I know it is a dumb question but just check your air filters to be sure there are clean and installed right.
"DEFECTIVE OWNER/OPERATOR NOT COVERED UNDER WARRANTY"