I just took my car to the dealer because of the check engine light and they replaced the O2 sensor. Now all of a sudden the light pops up again and when I run self diagnostic I get Rear Heated 02 sensor! Anyone have any ideas on what to do from here?

 

Sorry to hear about your misfortune man. I went through the same crap with Nissan with my old '96 rear o2. I was originally charged $300 to replace the darn thing and a few weeks later the MIL is back on for the EXACT same sensor. What Nissan will do for you (and this goes for ANY repair they do on our cars) is replace/fix the problem free of charge within a year, IF and only if you have the same problem as before. So you've got about a year from now to get your car down there and have it fixed once again. Good luck.

 

Ya, problem is I took it on Friday (16th) and for the second time yesterday (19th). So this will be #3!

 

Eek! That's unbelieveable...THREE times! Try to get them to toss in a free 60k tune-up service for all your trouble.

 

Ya, that or a new car.