User Tag List

Reply
 
Thread Tools Rate Thread Display Modes
Old 02-09-2015, 10:37 AM #1
edwardvmassey edwardvmassey is offline
Member
 
Join Date: Jan 2014
Location: Virginia
Posts: 128
Real Name: Ned
edwardvmassey is on a distinguished road
edwardvmassey edwardvmassey is offline
Member
 
Join Date: Jan 2014
Location: Virginia
Posts: 128
Real Name: Ned
edwardvmassey is on a distinguished road
Simultaneous P0031 and P0051 Codes

Hey guys, I've done a good bit of research and the only similar case I could find was with a 2nd gen tacoma but I was wondering if the 4runner V8 could have the same issue. I bought a 2005 V8 with 100K this weekend and spent the next day swapping out all the parts from my previous 4runner most notably a k&n CAI. Everything went on fine and fired up but then I got the check engine, vsc and trac lights. Went to advanced and pulled the codes, P0031 and P0051. I'm wondering if anyone else has gotten these codes simultaneously as it seems odd they would all go bad at once. Is it possible it is just a fuse or something in the ECU? All help appreciated.
edwardvmassey is offline   Reply With QuoteReply With Quote
Old 01-29-2017, 04:49 PM #2
sibanez sibanez is offline
Member
 
Join Date: Dec 2005
Location: Camp Hill, PA
Age: 43
Posts: 73
sibanez is on a distinguished road
sibanez sibanez is offline
Member
 
Join Date: Dec 2005
Location: Camp Hill, PA
Age: 43
Posts: 73
sibanez is on a distinguished road
Quote:
Originally Posted by edwardvmassey View Post
Hey guys, I've done a good bit of research and the only similar case I could find was with a 2nd gen tacoma but I was wondering if the 4runner V8 could have the same issue. I bought a 2005 V8 with 100K this weekend and spent the next day swapping out all the parts from my previous 4runner most notably a k&n CAI. Everything went on fine and fired up but then I got the check engine, vsc and trac lights. Went to advanced and pulled the codes, P0031 and P0051. I'm wondering if anyone else has gotten these codes simultaneously as it seems odd they would all go bad at once. Is it possible it is just a fuse or something in the ECU? All help appreciated.
Did you ever figure out the cause? Just hit this myself.
sibanez is offline   Reply With QuoteReply With Quote
Old 01-29-2017, 05:18 PM #3
catrains catrains is offline
Senior Member
 
Join Date: Mar 2016
Location: Massachusetts
Posts: 1,183
catrains will become famous soon enough catrains will become famous soon enough
catrains catrains is offline
Senior Member
 
Join Date: Mar 2016
Location: Massachusetts
Posts: 1,183
catrains will become famous soon enough catrains will become famous soon enough
Quote:
Originally Posted by sibanez View Post
Did you ever figure out the cause? Just hit this myself.
those are the A/F sensors . upstream of cat converter. these burn out . the heater in them has to create very high temps so if you do too much idling it will burn them up. can also be a fuse blew for the a/f heater circuit. if you remove the sensor measure the heater resistance ..sensor wire could have shorted out also.

I had this happen on a 2007 V8 T4R limited ..
catrains is offline   Reply With QuoteReply With Quote
Old 01-29-2017, 05:24 PM #4
sibanez sibanez is offline
Member
 
Join Date: Dec 2005
Location: Camp Hill, PA
Age: 43
Posts: 73
sibanez is on a distinguished road
sibanez sibanez is offline
Member
 
Join Date: Dec 2005
Location: Camp Hill, PA
Age: 43
Posts: 73
sibanez is on a distinguished road
Thank you, very helpful.

So, first thing is to check the fuse, then the relay and if both are good, then the O2 sensor?

How do you measure the heater resistance?
sibanez is offline   Reply With QuoteReply With Quote
Old 01-29-2017, 08:27 PM #5
catrains catrains is offline
Senior Member
 
Join Date: Mar 2016
Location: Massachusetts
Posts: 1,183
catrains will become famous soon enough catrains will become famous soon enough
catrains catrains is offline
Senior Member
 
Join Date: Mar 2016
Location: Massachusetts
Posts: 1,183
catrains will become famous soon enough catrains will become famous soon enough
Quote:
Originally Posted by sibanez View Post
Thank you, very helpful.

So, first thing is to check the fuse, then the relay and if both are good, then the O2 sensor?

How do you measure the heater resistance?
use ohm meter should be low resistance about 15-30 ohms..

a typical O2 sensor operates at 750 deg f. these a/f sensors run at 1000deg F.

so if you idle too long esp on cold start that relay keeps these powered up to make sure they are at that high temp... 4 wires on them I forget what colors 2 wires is to the heater ,but you should get it ...
catrains is offline   Reply With QuoteReply With Quote
Old 04-19-2017, 11:01 AM #6
Slam95d Slam95d is offline
Junior Member
 
Join Date: Oct 2016
Location: Bay Area, CA
Posts: 10
Slam95d is on a distinguished road
Slam95d Slam95d is offline
Junior Member
 
Join Date: Oct 2016
Location: Bay Area, CA
Posts: 10
Slam95d is on a distinguished road
Just want to share my experience with fixing this same issue on my 4runner. I hope this helps: P0031 and P0051 Codes - Check Engine Light, VSC TRAC, VSC OFF Light - The Track Ahead
Slam95d is offline   Reply With QuoteReply With Quote
Old 04-19-2017, 06:52 PM #7
AuSeeker AuSeeker is offline
Senior Member
 
Join Date: Nov 2016
Location: South Carolina
Posts: 4,617
Real Name: Skip
AuSeeker has a brilliant future AuSeeker has a brilliant future AuSeeker has a brilliant future AuSeeker has a brilliant future AuSeeker has a brilliant future AuSeeker has a brilliant future AuSeeker has a brilliant future AuSeeker has a brilliant future AuSeeker has a brilliant future AuSeeker has a brilliant future AuSeeker has a brilliant future
AuSeeker AuSeeker is offline
Senior Member
 
Join Date: Nov 2016
Location: South Carolina
Posts: 4,617
Real Name: Skip
AuSeeker has a brilliant future AuSeeker has a brilliant future AuSeeker has a brilliant future AuSeeker has a brilliant future AuSeeker has a brilliant future AuSeeker has a brilliant future AuSeeker has a brilliant future AuSeeker has a brilliant future AuSeeker has a brilliant future AuSeeker has a brilliant future AuSeeker has a brilliant future
Quote:
Originally Posted by Slam95d View Post
Just want to share my experience with fixing this same issue on my 4runner. I hope this helps: P0031 and P0051 Codes - Check Engine Light, VSC TRAC, VSC OFF Light - The Track Ahead
Your issue was very frustrating for sure, GREAT job on your persistence and research to solve it, thanks for posting, I have book marked your web page for future use...god forbid that I ever need it, but I will for sure pass the link along if I see anyone else needing help with these codes coming up simultaneous!!
__________________
2004 Limited V8
AuSeeker is offline   Reply With QuoteReply With Quote
Old 04-20-2017, 06:21 PM #8
Slam95d Slam95d is offline
Junior Member
 
Join Date: Oct 2016
Location: Bay Area, CA
Posts: 10
Slam95d is on a distinguished road
Slam95d Slam95d is offline
Junior Member
 
Join Date: Oct 2016
Location: Bay Area, CA
Posts: 10
Slam95d is on a distinguished road
Thanks for the comments. Feel free to have them reach out to me directly too if they need further help.
Slam95d is offline   Reply With QuoteReply With Quote
Old 04-23-2017, 09:49 AM #9
alia176 alia176 is offline
Senior Member
 
Join Date: Jan 2015
Location: East Mountains, NM
Posts: 1,210
alia176 will become famous soon enough alia176 will become famous soon enough
alia176 alia176 is offline
Senior Member
 
Join Date: Jan 2015
Location: East Mountains, NM
Posts: 1,210
alia176 will become famous soon enough alia176 will become famous soon enough
Quote:
Originally Posted by Slam95d View Post
Just want to share my experience with fixing this same issue on my 4runner. I hope this helps: P0031 and P0051 Codes - Check Engine Light, VSC TRAC, VSC OFF Light - The Track Ahead
What an awesome job, I'm very impressed with your tenacity. I'm having the same problem but for a different reason so I'll start a new thread.
__________________
2003 Sport V8 Icon 2" rear, Bilstein 6112 front with 700# king springs, Gibson cat back, Magnaflow cross pipe. OBA, DIY sliders, etc
1996 FZJ80 landcruiser with whole bunch of stuff, including a Turbo.
1997 4Runner SR5 - daughter's ride, slowly getting built up
alia176 is offline   Reply With QuoteReply With Quote
Old 12-16-2019, 01:39 PM #10
Quintin Quintin is offline
Junior Member
 
Join Date: Dec 2019
Location: DFW
Posts: 1
Quintin is on a distinguished road
Quintin Quintin is offline
Junior Member
 
Join Date: Dec 2019
Location: DFW
Posts: 1
Quintin is on a distinguished road
Quote:
Originally Posted by sibanez View Post
Did you ever figure out the cause? Just hit this myself.
I’ve got the P0051 on my 04 4R Ltd V8. I’m not able to actually locate the sensor. I’ve read it is Bank 2 (passenger side) and pre-cat.

Any help is greatly appreciated. I’ve already purchased denso sensor from Napa.

Quintin
Quintin is offline   Reply With QuoteReply With Quote
Old 12-16-2019, 05:06 PM #11
MikeinNH67's Avatar
MikeinNH67 MikeinNH67 is offline
Senior Member
 
Join Date: Dec 2018
Location: New Hampshire
Posts: 1,177
Real Name: Mike
MikeinNH67 is just really nice MikeinNH67 is just really nice MikeinNH67 is just really nice MikeinNH67 is just really nice MikeinNH67 is just really nice
MikeinNH67 MikeinNH67 is offline
Senior Member
MikeinNH67's Avatar
 
Join Date: Dec 2018
Location: New Hampshire
Posts: 1,177
Real Name: Mike
MikeinNH67 is just really nice MikeinNH67 is just really nice MikeinNH67 is just really nice MikeinNH67 is just really nice MikeinNH67 is just really nice
Quote:
Originally Posted by Quintin View Post
I’ve got the P0051 on my 04 4R Ltd V8. I’m not able to actually locate the sensor. I’ve read it is Bank 2 (passenger side) and pre-cat.

Any help is greatly appreciated. I’ve already purchased denso sensor from Napa.

Quintin
If it's anything like the V6 you just look at where the manifold bolts to the cylinder from above and just follow the pipe down. Kinda near the firewall.
__________________
Mike

03 4runner Limited
1GR-FE V6 w/199k miles
MikeinNH67 is offline   Reply With QuoteReply With Quote
Old 06-14-2020, 09:57 PM #12
trdsport's Avatar
trdsport trdsport is offline
Member
 
Join Date: May 2017
Location: Ontario
Posts: 43
trdsport is on a distinguished road
trdsport trdsport is offline
Member
trdsport's Avatar
 
Join Date: May 2017
Location: Ontario
Posts: 43
trdsport is on a distinguished road
Quote:
Originally Posted by Slam95d View Post
Just want to share my experience with fixing this same issue on my 4runner. I hope this helps: P0031 and P0051 Codes - Check Engine Light, VSC TRAC, VSC OFF Light - The Track Ahead
.
Above link doesnt work...figured a way by typing in p0031 on that page & it worked which is pasted below...


P0031 and P0051 Codes - Check Engine Light, VSC TRAC, VSC OFF Light - The Track Ahead
__________________
2008 4Runner Limited 4.7 V8 Limited, XREAS & Rear Air bag, Nautical blue metallic
2005 4Runner Limited - 4.7L V8 Sold
trdsport is offline   Reply With QuoteReply With Quote
Old 07-04-2020, 07:06 PM #13
atalarico's Avatar
atalarico atalarico is offline
Senior Member
 
Join Date: Jul 2010
Location: Denver, CO
Posts: 1,433
atalarico will become famous soon enough
atalarico atalarico is offline
Senior Member
atalarico's Avatar
 
Join Date: Jul 2010
Location: Denver, CO
Posts: 1,433
atalarico will become famous soon enough
So what if I’m getting these codes but also p101 and 102 MAF sensor codes? The 101 and 102 codes come at first start. The o2 sensor ones come after I drive a bit. I replaced the MAF sensor but it could be the wiring harness for the MAF still.

Are these o2 ones just a symptom of the MAF issues or an issue unto themselves?
__________________
2004 Sport Edition V8. 3" OME lift. 5th Gen Brakes. 285/70 Duratracs. JBA UCAs. SCS Ray10s. DT Headers.

1997 4-Runner Limited w/ factory locker. Totaled in February 2018. Still miss it.
atalarico is offline   Reply With QuoteReply With Quote
Reply

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
P0031 oxygen sensor location ttn6485 4th Gen T4Rs 19 04-07-2019 09:31 PM
CEL, Code P0031 wibadger28 4th Gen T4Rs 0 07-07-2014 03:12 PM
OBDII code P0031 slyangel9 4th Gen T4Rs 4 06-17-2013 12:29 PM
V8 - Check Engine/P0031 DC runner 4th Gen T4Rs 7 03-18-2012 02:44 PM
P0031 on 04 4Runner V8 part #? dave4242 4th Gen T4Rs 3 12-10-2011 03:46 PM

Powered by vBadvanced CMPS v3.2.2

All times are GMT -4. The time now is 11:06 AM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2024 DragonByte Technologies Ltd.
Feedback Buttons provided by Advanced Post Thanks / Like (Lite) - vBulletin Mods & Addons Copyright © 2024 DragonByte Technologies Ltd.
User Alert System provided by Advanced User Tagging (Lite) - vBulletin Mods & Addons Copyright © 2024 DragonByte Technologies Ltd.
***This site is an unofficial Toyota site, and is not officially endorsed, supported, authorized by or affiliated with Toyota. All company, product, or service names references in this web site are used for identification purposes only and may be trademarks of their respective owners. The Toyota name, marks, designs and logos, as well as Toyota model names, are registered trademarks of Toyota Motor Corporation***Ad Management plugin by RedTyger
 
Copyright © 2020