Ok, I got my max about 2 weeks ago. When I got it the check engine light was on so the guy I bought it from had his shop check everything and I guess it was a heat sensor. Got the car back 2day they replaced the heat sensor and cleaned the harness for the knock sensor but the light is still coming on. I haven't checked the ecu codes yet, Does anyone have the link to the tutorial that says how to do it? I'm not sure if I trust that shop so I rather check the codes myself and see if I can figure it out.

 

the last "important" thread on the first page of this forum has the diagnosis procedure and the page that shows what the codes mean

 

cool, thanks must have missed it.