razel

Recently regular gas was used in my 99 I30 and shortly after the "Service Engine Soon" light came on. I checked the engine code and it was 0313 and 0708 which according to a source on the web both refer to the rear oxygen sensor. I cleared it and hoped it was related to the use of regular gas (which the car shouldn't complain about).

Unfortunately the SES light came come again, but this time only the 0313 code. I cleared it again thinking that it was still regular gas related since I was still using up the regular gas, but unfortunately 2 full gas tanks of premium gas later the light now comes on about every 100 miles throwing at me both the 0313 and 0708 codes.

I would like to inspect the rear oxygen sensor and saw some pictures online of where it is located for the 95-98 Nissan Maxima, but I couldn't find the rear oxygen sensor on my 99 I30. Can anyone tell me where to find this bugger?

Also can anyone here verify what both those codes mean? Most sites that detailed the codes refered to the 95-98 Nissan Maxima. Nearly all of which didn't list either the 0708 and 0313 codes. Only one did. I want to make sure I am going after the right thing.

Your help is greatly appreciated.

I30tMikeD

iTrader: (8)

First, the lower octane gas is not going to cause your rear oxygen sensor to go bad. It has nothing to do with that. Oxygen sensor just go bad sometimes and I30/maximas historically have o2 sensor problems. Just look at the 4th gen forum, there is always at least 3 current threads about o2 sensors.

The rear oxygen sensor should be on the cat or right after it, I can't remeber which one, but it is fairly easy to locate and replace.

MaDdFLaSheR

iTrader: (1)

right after if i remember right.. but its not on the cat for sure.. at least not on my 99se

maxS

ok, here is how it goes (at least for the california edition): 99 i30/max has 4 o2 sensors total - 2 per bank (2+2=4). It is not 3 ea. like before, 1 per bank + 1 after the main cat cat.

razel

Yes, it is a California bought I30.

Every time I get underneath the car, I swear I don't see any sensors or wires on and around where it should be. I get a feeling I'll need to remove something to see these sensors and where exactly would I find it? I tried following the diagrams around the web and in a manual for a 99 maxima and it seems like these sensors should be just obvious.

Can anyone care to take a pic of their I30 or point out exactly wehre these hidden rear oxygen sensors buggers are?

Thanks again for all the help.

maxS

my mom's i30 is 99 also, ill try to take some pix tomorrow

razel

I finally got a chance to work on the car again and I was able to find 3 oxygen sensors. All three harness connectors for the oxygen sesors where easily accessible placed up top between the engine the radiator and after tracing the wires for all three found that all three sensors where located at the front of the engine!

Supposidly there are 4 oxygen sensors and it's probably just my luck that that last oxygen sensor that I need to find is the one I probably need to replace.

maxS

sorry man for delay, if you still need the picture, i'll post it tonight.

razel

Please read my newer R.I.P. post.