I have a 99' Maxima SE (62K), tonight the Service Engine Soon light came on for the first time. No noticable behavior. I ran the self diagnosis and saw 5 long and then 10 short blinks. I cannot find reference to this code anywhere. Just wondering if anyone had seen this code before? When I bought the car two years ago (37K), the check engine light came on during the test drive. The dealer fixed before the purchase, but I am wondering if this may be something similar. I noticed that most of the 05XX code are for misfires.

Any feedback would be appreciated. Thanks!

 

I believe thats the rear oxygen sensor. About $60 from Courtesy Nissan. Will take you about 15 min. to change with an o2 socket wrench. Ours went out around the same mileage.