As always, an amazing writeup by the Hemingway of XFires!! Very interesting and informative.

"The PO221 code was for throttle body and or Accelorator Pedal Position sensor (APP). I finally went to the pedal (gas) and pulled it and after inspection opened the $178 part that is not servicable. After studing it and taking photos I replaced it without any change or improvement."

I think we would like to see your photos of you "studing it". On second thought, never mind.....