The Nissan Path Forum Index The Nissan Path
The World Wide Nissan Pathfinder Owner's Forum
 
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

Use Google to search TheNissanPath forums ->
Oxygen sensor voltage

 
Post new topic   Reply to topic    The Nissan Path Forum Index -> R51 Engine, Driveline and Powertrain
View previous topic :: View next topic  
Author Message
TooTallMike



Joined: 28 Oct 2015
Posts: 30
Location: Jblm, Washington

PostPosted: Sat May 05, 2018 10:08 am    Post subject: Oxygen sensor voltage Reply with quote

Hey guys. Hooked up my reader to check my voltage on my sensors and my b2s1 sensor was reading .9. Ordered another one and hooked it up but there is still no change in voltage.. what gives? Am I just a noob?
Back to top
View user's profile Send private message
TooTallMike



Joined: 28 Oct 2015
Posts: 30
Location: Jblm, Washington

PostPosted: Wed May 09, 2018 12:05 pm    Post subject: Reply with quote

So I noticed my car runs better and is more responsive and the dte is way more than I ever got. Typically it was about 265 per tank and then it dropped to 225 and now it's up to 324! Voltage is still high and only drops in range at about 3500 rpm on the highway. I'm stumped as to why it didn't change the voltage but increased range?
Back to top
View user's profile Send private message
smj999smj
Moderator


Joined: 22 Jan 2012
Posts: 4718
Location: Prospect, VA

PostPosted: Wed May 09, 2018 8:04 pm    Post subject: Reply with quote

Your front sensors are air/fuel ratio sensors and work a little differently than a "regular" oxygen sensor, which is what you have in the back. Air/fuel ratio sensors operate in a much narrower range.
_________________
2006 Pathfinder LE VQ40DE AWD, Nitto Dura Grappler P265/65R17, aftermarket radiator, Airlift 1000's, Bilstein HD rear shocks
Back to top
View user's profile Send private message Send e-mail
TooTallMike



Joined: 28 Oct 2015
Posts: 30
Location: Jblm, Washington

PostPosted: Wed May 09, 2018 8:33 pm    Post subject: Reply with quote

So it's okay for bank 1 sensor 1 to be at .4-.5 and bank 2 sensor 1 to stay at .9 ?
Back to top
View user's profile Send private message
smj999smj
Moderator


Joined: 22 Jan 2012
Posts: 4718
Location: Prospect, VA

PostPosted: Thu May 10, 2018 10:40 pm    Post subject: Reply with quote

You would think that would be an issue, but a lot of people have reported similar readings on VQ40DE engines.
_________________
2006 Pathfinder LE VQ40DE AWD, Nitto Dura Grappler P265/65R17, aftermarket radiator, Airlift 1000's, Bilstein HD rear shocks
Back to top
View user's profile Send private message Send e-mail
TooTallMike



Joined: 28 Oct 2015
Posts: 30
Location: Jblm, Washington

PostPosted: Fri May 11, 2018 6:34 am    Post subject: Reply with quote

Hmmmm that is super weird. But milage went up so I'm cool with it! Thanks again !
Back to top
View user's profile Send private message
underworld1001



Joined: 27 Nov 2016
Posts: 118
Location: Austin, TX

PostPosted: Wed May 16, 2018 5:49 pm    Post subject: Reply with quote

Wanted to ask about the sensors. Which ones did you get and from where? From what I understand, the upstream ones are the more important ones to replace and generally the most $$$. As I've hit 101000 on my 2011, I'd like to replace them for preventive/general maintenance. If I'm not mistaken there's 4 to replace (2 up / 2 down) on the V6?
_________________
2011 SV V6 - BF Goodrich KO2 LT265/75 17-C, StopTech slotted rotors (934.42044), AEM DryFlow drop-in air filter (28-20286), free air box mod, Xtreme Truck Performance IMS (http://extremetruckperformance.com/?page_id=6), Bilstein 4600's (F-24-197427 / R-24-197434), Moog springs (F-81280 / R-81119 ), CSF aluminum radiator (7029)
Back to top
View user's profile Send private message
TooTallMike



Joined: 28 Oct 2015
Posts: 30
Location: Jblm, Washington

PostPosted: Thu May 17, 2018 1:56 pm    Post subject: Reply with quote

[quote="underworld1001"]Wanted to ask about the sensors. Which ones did you get and from where? From what I understand, the upstream ones are the more important ones to replace and generally the most $$$. As I've hit 101000 on my 2011, I'd like to replace them for preventive/general maintenance. If I'm not mistaken there's 4 to replace (2 up / 2 down) on the V6?[/quote]

I got the denso one from Rock Auto. The original I pulled was denso also. I'm just confused as to why b2s1 reads .9 almost all the time even after the swap. B1s1 is money at .4 but it did increase mpg.
Back to top
View user's profile Send private message
disallow
Site Admin


Joined: 13 Aug 2008
Posts: 2648
Location: Winnipeg, Canada

PostPosted: Thu May 17, 2018 6:28 pm    Post subject: Reply with quote

My voltage readings are the similarly confusing, as are yours.

I replaced with Denso about 3-4 years ago, and also had an improvement in fuel economy, though it was fairly short lived.

You need to watch the trim readings, and its the speed at which the sensor reacts that is better on a new sensor.

Here is a short video I took of my B1S1 B1S2 B2S1 B2S2 readings.

https://www.youtube.com/watch?v=OX-V8rIE5nM
_________________
Terry in Winnipeg

'05 Pathfinder SE Premium 4x4 - 315000kms (195000mi) - weekend warrior, Cortex Superchips on 87 Octane Tune, K&N filtercharger, Airlift 1000, Prodigy Brake controller, 7 pin trailer hookup, Prostart Remote Starter, Bilstein 4600 rear shocks, Cooper Discoverer ATw P265/70/16
Back to top
View user's profile Send private message
TooTallMike



Joined: 28 Oct 2015
Posts: 30
Location: Jblm, Washington

PostPosted: Fri May 18, 2018 5:28 am    Post subject: Reply with quote

[quote="disallow"]My voltage readings are the similarly confusing, as are yours.

I replaced with Denso about 3-4 years ago, and also had an improvement in fuel economy, though it was fairly short lived.

You need to watch the trim readings, and its the speed at which the sensor reacts that is better on a new sensor.

Here is a short video I took of my B1S1 B1S2 B2S1 B2S2 readings.

https://www.youtube.com/watch?v=OX-V8rIE5nM[/quote]

Yours seem way more responsive than mine. Only when I'm at about 3500 rpm on the highway does my b2s1 sensor come into the normal range. Super confusing because it's constantly at .9
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic    The Nissan Path Forum Index -> R51 Engine, Driveline and Powertrain All times are GMT - 8 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group