Need help with O2 sensor locations....thanks!

The club for Nissan Maxima and Infiniti I30 / I35 owners, and the official home of Maxima Club of America!
User avatar
leeQX4
Posts: 107
Joined: Wed May 14, 2003 6:02 am
Car: 04 I35/03 G35

Post

First off I would like to say hi Nistech, long time no hear man... I needs some more help from you.

Do you know of all of the o2 sensor locations for the Maxima gen 5.5/I35? I have cattman headers installed end of last year, and cattman specifcally made a version 2 of his headers and put precut bung hole after the pre-cat in the b-pipe (or y-pipe I don't know). He said this should eliminate an SEL light from being triggered by the o2 sensors. Well, when I got my headers installed by a local import shop, they told me they couldn't place one of my o2 sensors and had to seal it up and tuck it away. Well that was 8 months ago and this year 2005, february, I started getting the SEL when I do atleast 10-15 minute highway runs. I ignore the SEL because I have the ECU reset procedure and I use that procedure everytime it comes on to turn the SEL light off. NOW, the SEL light comes on when my car idles on start up i.e. soon as i turn the car and it sits for a minute or two idling, bam SEL. This is becoming really annoying and I do not want to splice any wires or connect the o2 sim module if i don't need to.

Back to my question....Do you have a diagram or a break down of where the O2 sensors are since I was not there at my shop to watch the install of my headers. I want to get my car on a lift this weekend and figure out why they could not place one of my O2 sensors and I am wondering if this is why I keep getting the SEL. I only have 5,409 miles on my car so, I find this really strange.

Thanks lee (sorry for the long description).


User avatar
maxhopper
Posts: 5867
Joined: Mon Nov 10, 2003 10:43 am
Car: 02 Maxima SE 6spd
Location: Kentucky

Post

Here you go.


User avatar
audtatious
Moderator
Posts: 37008
Joined: Sun Oct 27, 2002 5:31 pm
Car: 2017 Q60 Red Sport. Gone: 2014 Q50s, 2008 G37s coupe, 2007 G35s Sedan, 2002 Maxima SE, 2000 Villager Estate (Quest), 1998 Quest, 1996 Sentra GXE
Location: Stalking You
Contact:

Post

Scott, we probably need to start adding these diagrams we keep posting to our technical "how-to" thread or create another one just for them. Would probably be a good thing to have... ???

NISTECH
Posts: 12270
Joined: Sun May 25, 2003 4:17 am

Post

As you can see Lee the max mods are on top of things here, unlike when you were posting on your QX4. I find that I rarely need to look at this forum as these guys got it covered.

Matt I like your idea of compiling that info. When you guys go to do this let me know if there is anything I can get ya to add to it.

User avatar
leeQX4
Posts: 107
Joined: Wed May 14, 2003 6:02 am
Car: 04 I35/03 G35

Post

Wow, you guys are quick. No more site hopping for me looking for technical information. You guys seem like a one stop shop. Thanks for the info guys, I am going to work on this today.



Nistech, I see you are not the only guru around.

User avatar
audtatious
Moderator
Posts: 37008
Joined: Sun Oct 27, 2002 5:31 pm
Car: 2017 Q60 Red Sport. Gone: 2014 Q50s, 2008 G37s coupe, 2007 G35s Sedan, 2002 Maxima SE, 2000 Villager Estate (Quest), 1998 Quest, 1996 Sentra GXE
Location: Stalking You
Contact:

Post

Scott (NISTECH), I could use '05-06 Maxima FSM's

Lee, we can't guarantee fast responses, but we do try and respond as quick as we can.

knivez
Posts: 1
Joined: Thu Aug 16, 2007 9:01 am

Post

Hi,

That is a very helpful picture, but I was wondering if I picked out the right senor.

I have error codes P0139 & P1147 and they reffer to Bank 1 - Sensor 2.

The picture does not state a color for that sensor, and I was wondering if I chose the correct sensor:

http://replacement.autopartswa...=true

#C5010-135812 - Top of the page sensor.

I want to know because that sensor is only $110 and I have called around town and got quotes (for part only) of $145, $265, $175, $166 when I asked for a Nissan Maxima 2002 bank 1 sensor 2.

Thanks!
Modified by knivez at 12:22 PM 8/16/2007

jortega999
Posts: 2
Joined: Tue Aug 11, 2009 5:16 pm
Car: 2003 Maxima SE Titanium Edition Automatic

Post

Hello everyone. I am a noob, so please excuse my questions. I recently had to replace one of the o2 sensors on my 03 Maxima as it was damaged by something I ran over. After the incident the code came up showing me which one sensor I had to change out. After I changed it with an OEM part and got the code cleared by Advanced Auto Parts, the code went away for a little while. Now the code has returned with friends. Now I show a P0031, P0037, P0051, P0057. The guys are the auto parts store said that it seems like all my o2 sensors are failing. What the heck happened? Did my replacing the one o2 sensor fry the rest and the new one? Is this a problem with the computer? I need some help because something doesn't seem right with this picture. I've never had this happen to any other car I've owned.

stasfire
Posts: 1
Joined: Wed Aug 19, 2009 2:24 pm

Post

hey i got the same exact problem with my g35. got a new o2 now all four are showing please let me know what your solution is. i don't go on here often so if you can email me it would be great. [email protected]

snookhums
Posts: 1
Joined: Tue Sep 15, 2009 6:42 am
Car: 2002 Maxima GLE

Post

I took in my 2002 Maxima GLE last week because of the P1147 & P0139 codes settings off the SEL. The mechanic said that he replaced the front 2 O2 sensors and cleared the codes. An hour later of driving the SEL came back on and I went to Autozone to pull the codes on my own before taking it back and the same 2 codes P1147 & P0139 came up. Any thoughts? The mechanic is now saying that we should replace the back 2 O2 sensors. Shouldn't these codes be different if in fact the front 2 sensors were replaced? Shouldn't we be seeing other codes for the other sensors?

jortega999
Posts: 2
Joined: Tue Aug 11, 2009 5:16 pm
Car: 2003 Maxima SE Titanium Edition Automatic

Post

Of all things, it turned out that the fuse for the o2 sensors had blown. All four sensors were showing bad on mine after I replaced on of the sensors. That made no sense, so my mechanic said that he thought that the bad sensor somehow blew the fuse. We checked out the cabin fuse box and found the 02 fuse was definitely blown. That's why all four were showing as bad.

paluli
Posts: 22
Joined: Thu May 14, 2009 6:10 am
Car: Infiniti I30t

Post

you can find all the oxigen sensors at oxigensensors.com they are very help full and good price.

User avatar
loystock
Moderator
Posts: 2144
Joined: Sun Sep 21, 2003 9:12 pm
Car: 10 Pilot, 97&03 Q45s, 97 I30 and 06 M35 Sports (04 G35 & 99 I30-RIP)
Location: San Jose, CA

Post

Snookhums, Your mechanic does not know your car. The DTC Code 0138/1147 specifically refers to Heated Oxygen Sensor 2 - Bank 1 (HO2S2-B1) which has a WHITE harness, cable length @ 31" with connector close to the radiator side and sensor mounted on the PRE-CAT of Bank 1. ON the radiator side, there are 3 O2 Sensor connectors with BLUE, RED and WHITE harnesses. At the back of the engine. pax side there is one Oxygen sensor with BLACK harness


User avatar
loystock
Moderator
Posts: 2144
Joined: Sun Sep 21, 2003 9:12 pm
Car: 10 Pilot, 97&03 Q45s, 97 I30 and 06 M35 Sports (04 G35 & 99 I30-RIP)
Location: San Jose, CA

Post

Since owners of earlier I30/I35/Maximas (1999-CA, 2000-CA & Federal and beyond) have started replacing O2 sensors, I think it would help you if I clarify some points about the VQ engine exhaust system and related O2 sensors. Please refer to the diagram posted by "maxhopper" earlier. Unless mechanics know your car, they would inadvertently replace the wrong sensor as what happened to "snookhums."

First, the transverse mounting of the VQ engine places Bank 1 (cylinders 1-3-5) close to the firewall while Bank 2 (cylinders 2-4-6) is close to the radiator. So if you are under the car, the front exhaust pipe is for Bank 2 and merges with Bank1 exhaust pipe downstream of Bank-1 Pre-Cat (This is where some mechanics may get confused).

Front O2 sensor in general is mounted before (upstream) the catalytic converter while the Rear O2 sensor is mounted after (downstream) of the catalytic converter. As applied to VQ engine, FRONT O2 sensor has 3-wire (power, signal and ground) while REAR O2 sensor had 4-wire (power, signal, ground + dedicated signal ground).

On this particular generation of cars, there are 3 catalytic converters - Bank 2 Pre-Cat (in front of engine) mounted vertically, Bank 1 Pre-Cat (below the engine) mounted horizontally and then the main/rear catalytic converter.

As for the O2 sensor location, cable length, original harness color-coding and connector location, see info below:

Bank 1 O2 Sensors-HO2S1-B1: Front 3-wire sensor with BLACK harness, @ 25" long with sensor mounted on the vertical section of the Bank 1 exhaust pipe with connector mounted on top of the engine, rear pax side-HO2S2-B1: Rear 4-wire sensor with WHITE harness, @ 38" long with sensor mounted in front of Bank 1 Pre-Cat and connector mounted on the radiator side

Bank 2 O2 Sensors-HO2S1-B2: Front 3-wire sensor with BLUE harness, @ 11" long with sensor mounted before B2 Pre-Cat (sensor is visible in front of engine) and connector mounted on the radiator side-HO2S2-B2: Rear 4-wire sensor with RED harness, @ 31" long with sensor mounted downstream of B2 Pre-Cat (horizontal section of the pipe) and connector mounted on the radiator side

For most OEM parts, best pricing is from one of NICO sponsors, IoS (Infiniti of Scottsdale) at "infinitipartsUSA.com a.k.a. "everythinginfiniti.com" also "everything nissan.com. They typically have 25% off MSRP.

For best pricing of OEM and quality replacement O2 sensors and spark plugs, it's very hard to beat NGK.com a.k.a. "sparkplugs.com." This is where I usually buy those particular parts. The "oxygensensors.com" referred to by OP is also reputable and in addition to quality replacement parts, also sells Walker and Universal sensors (requires cutting and splicing of wires). If you are patient enough, you can look at eBay (be wary of cheap sensors) and Amazon.com. I was lucky enough to buy an H02S2-B2 (RED) sensor, NGK P/N: 24572, which typically sells from $90-200 from Amazon for $77 including shipping.
Modified by loystock at 12:24 AM 9/18/2009

jdjohn
Posts: 10
Joined: Sun Oct 18, 2009 4:29 pm

Post

Anyone got that same diagram for a 97 I30? I've already replaced one O2 sensor, but am still getting codes. One was the knock sensor code. I've read that sometimes these codes can be falsely caused by other exhaust problems. Can anyone validate that and what the cure is?

Thanks,Jody

Drastic999
Posts: 1
Joined: Mon Nov 02, 2009 1:20 pm
Car: 97 maxima

Post

do you know where the heated oxygen sensor - bank 1 sensor 1 is on a 97 maxima??

User avatar
loystock
Moderator
Posts: 2144
Joined: Sun Sep 21, 2003 9:12 pm
Car: 10 Pilot, 97&03 Q45s, 97 I30 and 06 M35 Sports (04 G35 & 99 I30-RIP)
Location: San Jose, CA

Post

Here's the illustration of O2 sensors and locations on 97 I30 - Federal configuration, courtesy of IoS, infinitipartUSA.com. The 97 Maxima should be similar.

http://www.infinitipartsusa.co...gid=0

jdjohn
Posts: 10
Joined: Sun Oct 18, 2009 4:29 pm

Post

Drastic999 wrote:do you know where the heated oxygen sensor - bank 1 sensor 1 is on a 97 maxima??
I think it is sensor #1 in the link loystock provided. Thanks, loystock. Looks like 97s have three instead of four sensors like the newer models.

User avatar
HOSTvallo
Posts: 126
Joined: Wed Aug 03, 2011 3:57 pm
Car: '92 Z32 N/A / '02 Maxima SE 6-spd
Location: Gallatin, TN
Contact:

Post

I'm here to resurrect this thread, and ask.. where are the fuses for each o2 sensor? Thanks! :)

Edit: for a 2002 Maxima..


Return to “Maxima Forum & I30 / I35 Forum”