My car is being a real pain in the a$$ lately, Im trying to get my "service engine soon" light to stay off. so far iv replaced the KS and front o2 sensor.

When the mechanic plugged my car in he said that bank 1 sensor 2 was bad but I dunno which one that is? I replaced the first one right on the front down-pipe but that obviously isnt the right one so which is bank 1 sensor 2?

Also, is there both a SES and CE light? or are they the same light cuz iv heard people talk about both.

The car runs excellent with no misses or anything of the such but I just need to get that light off before I sell it. The mechanic has cleared it twice now when I replaced the above two things one at a time and the light comes back on within a day or two.

Please help me!
Thanks!!!

 

please, anyone?

 

SES = CEL.

There are 2 o2 sensors on the y-pipe (the pipe that connects the headers to cat). Look at BOTH prongs of the y-pipe.

Read the stickies.

 

Look here for the o2 locations.
http://www.jatan.net/02Sensor1.jpg


Credit: Jatan

I really gotta give it to this guy. This little page is so handy. Everytime I see a 02 thread, I automatically point them to this page.

 

Any diagrams of non-cali spec cars. I think my Maxima only has 3 sensors