Driving along last night my CEL came on, checked it this morning and it said 07 07, which is rear O2 sensor. Could be the reason teh MPG was going and I just noticed that early? Maybe why my low end has been a little laggy too and accel not as smooth. Anyway, how much am I looking at for this to be fixed?? And did it cause my problems you think? Thanks!

 

http://forums.maxima.org/showthread.php?threadid=149275

 

That kinda helps but the thing is...do I HAVE to replace it??? Im confused by that thread.

 

if you were able to pull CODES 0707 and 05 10 undefined(ie OK reading)
It was probably some FUNKY JUNK that blew through the CAT.

When you get a chance...ie car is cooled off...

1. Jack up the car.
2. Remove the rear O2 sensor and clean it off with some alcohol pads and dry off with a clean terry cloth.
3. Replace it, RESET ECU and you should be good to go.

If the 0707 comes up again...then replace it. ie Your O2 is bad.

 

Well the car will be on jacks this weekend getting suspension put on so maybe I can do that then.

Its not hurting performance though right with the ECU and all?? I drove around 20 miles tonight with the ECU reset and the light didnt come back on and the car felt just like it was before the light came on so I guess its fine that way?

 

maybe

 

OK, the light came back on, same code, so I guess maybe it really is bad??

 

That would be my guess.

SuDZ