User Tag List

Reply
 
Thread Tools Rate Thread Display Modes
Old 02-10-2022, 08:32 PM #1
Salty4Life Salty4Life is offline
Member
 
Join Date: Mar 2020
Location: West palm
Posts: 30
Salty4Life is on a distinguished road
Salty4Life Salty4Life is offline
Member
 
Join Date: Mar 2020
Location: West palm
Posts: 30
Salty4Life is on a distinguished road
P0171 codes

I have a 98 4Runner. Recently changed o2 sensor, upstream abs downstream. I drove the car about 20 miles today and the check engine light turn on. The codes from the scanner are.
P0171 sysytem to lean bank 1
A/Fs or ho2s contaminated deteriorated or system failed, air leaks after MAF sensors or in EGR or PCV system
Fuel control sensor out of calibration
P0130 o2 circuit bank 1 sensor 1
P0133 o2 sensor circuit slow response bank sensor 1

I’m gonna clean the MAP sensor and see if that helps, but the p0130 code was the one that made me change out o2 sensors and it’s still popping up. Now it says circuit one bank one.

Does anyone have any advice on what else to try?
Salty4Life is offline   Reply With QuoteReply With Quote
Old 02-10-2022, 08:49 PM #2
jgue467's Avatar
jgue467 jgue467 is offline
Senior Member
 
Join Date: Sep 2011
Location: Austin, Texas
Posts: 3,145
jgue467 is just really nice jgue467 is just really nice jgue467 is just really nice jgue467 is just really nice jgue467 is just really nice
jgue467 jgue467 is offline
Senior Member
jgue467's Avatar
 
Join Date: Sep 2011
Location: Austin, Texas
Posts: 3,145
jgue467 is just really nice jgue467 is just really nice jgue467 is just really nice jgue467 is just really nice jgue467 is just really nice
If air intake tubes are original, there is a good chance the closest one to the metal plenum has a crack and is leaking air in, messing up the A/F mixure.

Since it has lots of folds, the cracks hide there. I replaced mine with OEM when i got an 0171, gone since. Now the part number on the pic is for an 01-02, so get the one specific for your model, I'd suggest OEM.

Luck.
Attached Images
P0171 codes-new-air-intake-hose-jpg 
__________________
2001 Limited 4WD - 346+K - SunfireRed\Thunder Cloud; - 265/75/16 Michelin A/T2s - Fat Pat's 1.5" BL - StopTech ANGLED rotors - In series 699 trans cooler, New Yota1 transmission, All new OEM suspension front to rear.
jgue467 is offline   Reply With QuoteReply With Quote
Old 02-11-2022, 12:07 AM #3
brillo_76's Avatar
brillo_76 brillo_76 is offline
Elite Member
 
Join Date: May 2017
Location: Western PA
Posts: 6,012
Real Name: Jon
brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute
brillo_76 brillo_76 is offline
Elite Member
brillo_76's Avatar
 
Join Date: May 2017
Location: Western PA
Posts: 6,012
Real Name: Jon
brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute
+1 on that air intake hose from maf to intake. I had one Crack.

Sent from my SM-A505U using Tapatalk
__________________
7 3rd gens listed in the build thread (2 are parts mobiles)
Build Thread: https://www.toyota-4runner.org/3rd-g...os-builds.html
Brillo's Bucket Fluid Ex changer: https://www.toyota-4runner.org/3rd-g...ml#post3358086
Sparks Plugs Wire and Coil Information: https://www.toyota-4runner.org/3rd-g...on-5vz-fe.html
brillo_76 is offline   Reply With QuoteReply With Quote
Old 02-11-2022, 01:35 AM #4
octanejunkie's Avatar
octanejunkie octanejunkie is offline
Elite Member
 
Join Date: May 2013
Location: Los Angeles
Posts: 5,154
Real Name: C8H18 Mike
octanejunkie has much to be proud of octanejunkie has much to be proud of octanejunkie has much to be proud of octanejunkie has much to be proud of octanejunkie has much to be proud of octanejunkie has much to be proud of octanejunkie has much to be proud of octanejunkie has much to be proud of octanejunkie has much to be proud of octanejunkie has much to be proud of
octanejunkie octanejunkie is offline
Elite Member
octanejunkie's Avatar
 
Join Date: May 2013
Location: Los Angeles
Posts: 5,154
Real Name: C8H18 Mike
octanejunkie has much to be proud of octanejunkie has much to be proud of octanejunkie has much to be proud of octanejunkie has much to be proud of octanejunkie has much to be proud of octanejunkie has much to be proud of octanejunkie has much to be proud of octanejunkie has much to be proud of octanejunkie has much to be proud of octanejunkie has much to be proud of
Clean the MAF sensor with sensor cleaner and make sure your filter element is clean and free of debris.

Like has been said, make sure there are no air leaks between the MAF sensor and the throttle body.

Check all vacuum hoses in and exiting the engine bay, like to the vacuum can in the driver's wheel well.

Silly question, has the truck ever just fallen out of cruise control for no apparent reason?

Sent from my Pixel 4 XL using Tapatalk
__________________
.
1999 Toyota 4Runner SR5 Sport 4WD, V6 5-Speed e-Locker-> 4WD 4runner Journal Thread
1999 Toyota 4Runner SR5 Un-Sported 2WD, V6 Auto ->2WD 4runner Journal Thread
1959 Chevy 3100 1/2 Ton Pickup EVERYTHING done 'cept paint and body
.
octanejunkie is offline   Reply With QuoteReply With Quote
Old 02-11-2022, 02:31 AM #5
gamefreakgc's Avatar
gamefreakgc gamefreakgc is offline
Elite Member
 
Join Date: Oct 2014
Location: Citrus Heights, California
Age: 36
Posts: 7,330
Real Name: Jerod
gamefreakgc has a brilliant future gamefreakgc has a brilliant future gamefreakgc has a brilliant future gamefreakgc has a brilliant future gamefreakgc has a brilliant future gamefreakgc has a brilliant future gamefreakgc has a brilliant future gamefreakgc has a brilliant future gamefreakgc has a brilliant future gamefreakgc has a brilliant future gamefreakgc has a brilliant future
gamefreakgc gamefreakgc is offline
Elite Member
gamefreakgc's Avatar
 
Join Date: Oct 2014
Location: Citrus Heights, California
Age: 36
Posts: 7,330
Real Name: Jerod
gamefreakgc has a brilliant future gamefreakgc has a brilliant future gamefreakgc has a brilliant future gamefreakgc has a brilliant future gamefreakgc has a brilliant future gamefreakgc has a brilliant future gamefreakgc has a brilliant future gamefreakgc has a brilliant future gamefreakgc has a brilliant future gamefreakgc has a brilliant future gamefreakgc has a brilliant future
P0130 and P0133 only show up if you have an issue with the front O2 sensor or the wiring. Inspect the wiring harness from the sensor to the main engine harness and look for damage or melting - it is very close to the exhaust. If it checks out, you might have got a dud of a sensor and try another.

P0171 could be a vacuum leak. Clean the MAF sensor first though.
__________________
'98 4Runner SR5 - 4x4 JDM 5VZ-FE Supercharged - 249K miles.
326WHP 347TQ

AEM F/IC 6, 11 PSI, 3" Intake and 3" Exhaust
Jerod's Supercharged T[u]RD Build
gamefreakgc is offline   Reply With QuoteReply With Quote
Old 02-11-2022, 12:45 PM #6
Salty4Life Salty4Life is offline
Member
 
Join Date: Mar 2020
Location: West palm
Posts: 30
Salty4Life is on a distinguished road
Salty4Life Salty4Life is offline
Member
 
Join Date: Mar 2020
Location: West palm
Posts: 30
Salty4Life is on a distinguished road
Cleaned the MAF sensors, and checked all vacuum lines. I disconnected the battery to clear the codes. Drove around today and the lights haven’t come back on. It’s just strange that the MAF sensor can throw that many codes
__________________
1998 sr5 3.4 5peed 4x4
Salty4Life is offline   Reply With QuoteReply With Quote
Old 02-11-2022, 12:52 PM #7
octanejunkie's Avatar
octanejunkie octanejunkie is offline
Elite Member
 
Join Date: May 2013
Location: Los Angeles
Posts: 5,154
Real Name: C8H18 Mike
octanejunkie has much to be proud of octanejunkie has much to be proud of octanejunkie has much to be proud of octanejunkie has much to be proud of octanejunkie has much to be proud of octanejunkie has much to be proud of octanejunkie has much to be proud of octanejunkie has much to be proud of octanejunkie has much to be proud of octanejunkie has much to be proud of
octanejunkie octanejunkie is offline
Elite Member
octanejunkie's Avatar
 
Join Date: May 2013
Location: Los Angeles
Posts: 5,154
Real Name: C8H18 Mike
octanejunkie has much to be proud of octanejunkie has much to be proud of octanejunkie has much to be proud of octanejunkie has much to be proud of octanejunkie has much to be proud of octanejunkie has much to be proud of octanejunkie has much to be proud of octanejunkie has much to be proud of octanejunkie has much to be proud of octanejunkie has much to be proud of
Quote:
Originally Posted by Salty4Life View Post
Cleaned the MAF sensors, and checked all vacuum lines. I disconnected the battery to clear the codes. Drove around today and the lights haven’t come back on. It’s just strange that the MAF sensor can throw that many codes
Cool.

Get a code scanner, they are not super expensive and worth owning when you drive a 20+ year old truck. Plus you can clear the codes easily and not have to disco the battery for 30+ mins (which also resets the entire ECU, fuel tables, clock and radio presets) to clear a code.

Completing a drive cycle will be the real barometer of whether the issue is resolved or not. Here is an easy read on how to do that:

How to Complete a Drive Cycle | YourMechanic Advice

Make sure your fuel tank is at 50% full or so for the EV test to complete, that one takes the longest.

Sent from my Pixel 4 XL using Tapatalk
__________________
.
1999 Toyota 4Runner SR5 Sport 4WD, V6 5-Speed e-Locker-> 4WD 4runner Journal Thread
1999 Toyota 4Runner SR5 Un-Sported 2WD, V6 Auto ->2WD 4runner Journal Thread
1959 Chevy 3100 1/2 Ton Pickup EVERYTHING done 'cept paint and body
.
octanejunkie is offline   Reply With QuoteReply With Quote
Old 02-18-2022, 11:12 AM #8
Salty4Life Salty4Life is offline
Member
 
Join Date: Mar 2020
Location: West palm
Posts: 30
Salty4Life is on a distinguished road
Salty4Life Salty4Life is offline
Member
 
Join Date: Mar 2020
Location: West palm
Posts: 30
Salty4Life is on a distinguished road
Cleaning the MAF sensors and re checking all the vacuum lines fixed it. Thanks yall
__________________
1998 sr5 3.4 5peed 4x4
Salty4Life is offline   Reply With QuoteReply With Quote
Reply

Tags
bank , circuit , p0171 , sensor , system

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
Codes P0300 P0328 P0171 Car Pirate 4th Gen T4Rs 3 11-04-2021 09:16 AM
P0171 and P0174 codes RustyAb 5th gen T4Rs 1 11-20-2020 11:20 AM
Quickly Solved: P0171 & P0441 Codes BamaDrewski 3rd gen T4Rs 0 03-10-2018 12:02 AM
Troubleshoting codes P0171, P0130, P0133 please? SgtAbn 3rd gen T4Rs 5 06-16-2012 01:57 AM
Toyota 4runner codes P0171 and P0420 castironman 3rd gen T4Rs 8 02-04-2011 06:39 PM

Powered by vBadvanced CMPS v3.2.2

All times are GMT -4. The time now is 03:33 PM.

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