Hi,

I am getting codes P0057 01/02 and P0057 P 02/02. From my research it seems that means Heated O2 sensor bank 1, sensor 2 and Heated O2 sensor bank 2, sensor 2. I found a diagram showing where these two sensors are. Before I change them I also read it could be the fuse for O2 sensor. Can anyone tell me where this fuse is, or provide a diagram? Thanks so much in advance!

 

factory service manual:
http://www.nicoclub.com/archives/inf...e-manuals.html

fuse blocks are under the hood and on the left side of the dash (driver's side). I think there's also a fuse map in the car's user manual.

 

I do have a fuse block next to the battery, and also next to the ebrake pedal. However none of these fuses are labeled O2, or anything that looks related? Pics attached. I haven't had a chance to look under the car yet to inspect the cables going to the O2 sensors.

 

i don't think there's a fuse for the 02. did you search the service manual?

 

Guys, there are two fuse boxes in the battery compartment. The battery needs to be removed to access the one the OP needs, and yes, if you are tripping all four codes OP you probably popped the fuse. It has happened to me.

 

Really, I didn't see anything in the service manual regarding this. I also didn't remember seeing anything back there when I replaced the battery but that was a few years back. If I remember there is not much space behind the battery before you are into the firewall, and that little plastic cover you remove to access the battery doesn't give you much room either. I can double check though. Do you have anything that shows this second fuse box?
Thanks

 

Have you tried the FSM?

http://www.nicoclub.com/service-manu.../Sedan/2008/PG

Telcoman

 

must be an echo in here....

 

http://images.lmgtfy.com/?q=fuse+box+behind+battery+g35


I had to

 

Sorry, I found the third fuse box location. I was able to just loosen the battery hold down bracket and slide the battery over a little after removing the windshield cowl cover.

The O2 fuse was not blown, but I replaced it with a spare 15a just to be safe. Same issue, so I will inspect the O2 sensor wires, and if they are good replace the two O2 sensors, then then hopefully that will be it.

Thanks again guys

 

Two of the wires going to the one O2 sensor were completely deteriorated. I replaced both downstream O2 sensors with two new Denso sensors. Took under 30min total. Thank for all the help and sorry for my ignorance with my questions.

 

Glad you got it resolved. I was up all night trying to fix this same issue one night with a dyno tune appointment scheduled for 9AM the next day. It was hectic until I found the issue.

 

Hey man I would just like to know where u purchase ur o2 sensors because im worried they won’t fit my g35 I see lots of people run into that problem. Also does it matter if it’s a bank 1-2 sensor or is it the same thing?