QR Code Link to This Post need help with this. check engine came on.i changed 1 coil pak check engine light is out. never came on again.it will not reset if so it comes right back.again no check engine light and it runs great. it's not a default code.i have driven it over 500miles highway full tank of gas. been going on for over a month now have used 3 types of scanners {drive cycle on board test not complete yet p1000 code.} email a contact ## if interested in helping.