My check engine light magically appears one day as I’m driving so I took it to one of the better Nissan dealers around. They run the check and something about the oxygen sensor comes up, so the mechanic changes that, resets my check engine light and off I go. After say 20 miles I stop at a store to pick something up and when I start the car back up it’s on again! I take it back for the second time but this time I didn’t get to talk to the mechanic so I don’t know what they changed. (It’s still under warranty from the place I bought it from so the repair bill went straight to them.) Today I take my car to the wash and as I pull out I notice the light is on again!! I’m going to have to take it back for the third time on Thursday, yet I’m starting to lose faith in their service specialists. Anyone run into repeated problems such as this? If so your knowledge is appreciated.

 

http://forums.maxima.org/showthread....hreadid=104931

 

why don't you pull the code yourself for starters..........