I have reset my ECU two weeks ago with a code 5 long 12 short. Yesterday I did the same thing. I tried checking the code but there is no option for 12 short blinks. It seems that this is happening everytime we have a change in the temp outside. It started happening after the y-pipe and exhaust install.

 

http://forums.maxima.org/showthread....highlight=0512

its in there

 

http://forums.maxima.org/showthread....threadid=45274

SuDZ

 

Thanks! I guess the sensor need replacing after all. It's weird though because I have check it before I put it back in the greddy exhaust and it seems fine. Do you think it's possible that the y-pipe is causing this or the random cat?

 

are you following me?

 

you might have damaged it during removal or replacement.. just keep in mind it has no function on the performance of the car..

 

Yes.

Actually I realized right after I posted you got in there right before me. Couldnt have been much since we posted the same minute. But the question is am I following you or are you doing everything right before I do, which would make you pre-following me.

SuDZ

 

I thought the car runs rich when the check engine light is on!

 

only on the front o2 sensors.. not the rear

 

Thanks dude!