ok so i failed at tracking down the part and installing it myself and figured i d go to the dealership

I also had to go because the trunk button stopped working and needed a new BCM.

dealership took care of everything under warranty

 

I picked up sensor for under $100bux from Advanced/Autozone and replaced it myself. bought the o2 sensor socket

 

for these cars sensors dont matter if they are from autozon on my 03 i had to replaced the positioning sensor and told me had to be OEM from infinity if i will come across problems and will go out again, just want to make sure we can run autozone OEM parts lol

 

Alright guys I know you all probably don't want to hear this but I have seen this code for bank 1 and 2 numerous times and very rarely is it the air/fuel ratio sensor. Underneath the car there is a bracket which bolts to the bottom of the trans bell housing and also bolts to each catalytic converter. Look closely where the bracket bolts to each catalytic converter and you will see the weld is broken on the affected bank that has the a/f sensor code guaranteed. By having the crack there it is sucking in cold air and making sensor 1 read incorrectly. You can either have someone put a bead of weld on the crack or have dealer replace the cat or cats(usually both have cracked welds) The cats are covered 8 years 80,000 miles.

 

Good point and def possible. I had aftermarket HFC which ended up having cracked welds

 

Hi, my 2004 G35 64k km have a similar issues, the last night I cleanuped my air filter and MAF, but this morning I saw yellow liquid on the snow that come from under the hood, This is gas? if so, what can cause this issues?

Also the yellow stuff is maybe AC which release some crap (friend tell me that) or its prestone stuff...

I average like 12/13 MPG, or 18 L/100km, more then my previous V8 jeep grand cherokee!!