According the faqs, you have to have a "NGS" no idea what a NGS is, but I'll bet it's not something you can buy at your local auto parts store. I don't know if there's a way to do it without the NGS.New to the PSD and would like to clean my EGR valve. How is this, KOEO done/what are the steps? Turn the key to the on position then off for a certain number of cycles? Then should I see something in the info center? Or is this something totally different. I saw this question asked above but did not see a reply. Maybe I missed it or it was a PM?
Key On Engine Off (KOEO) On-Demand Self Test