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Hi. I went to autozone and diagnosed with code p0172 on my 2005 Lexus GX470. I have vsc trac, vsc off, anti skid, and check engine light on. The lights come on for about 100 miles and goes off for same distance and come back on again. It’s been like that for almost a year now . Can someone please help so I don’t have to spend so much money on replacing all the sensors

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You own a high end luxury vehicle as do I, 2005 ES330, the dealership is the best place to get Lexus problems fixed. With my own vehicle, I had a thermostat fault code come up, and like you it would reset itself and come back. The code said it was the thermostat and I queried it with my tyre guy. He also said it is a thermostat code. I said but it isn't overheating. He told me that the computers in Lexus are so clever they are actually looking for the water to reach x degrees in x minutes. He replaced the thermostat, the fault never came back. Anyway back to your P0172 Error code.

https://www.autocodes.com/p0172_lexus.html

Possible causes
Faulty front heated oxygen sensor
Ignition misfiring
Faulty fuel injectors
Exhaust gas leaks
Incorrect fuel pressure
Faulty Mass Air Flow (MAF) sensor

The first thing I would try is that stuff that you add to your fuel to clean the injectors.

Read more: https://www.autocodes.com/p0172_lexus.html

Pull codes P0172/P0175, need help diagnoising - ClubLexus - Lexus ...

https://www.clublexus.com > ... > IS Models > IS - 2nd Gen (2006-2013)Jul 6, 2013 - IS - 2nd Gen (2006-2013) - Pull codes P0172/P0175, need help diagnoising - My check engine light, VSC, and traction light all lit up yesterday. I pulled ... Title: 2GR-FSE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0171,P0172,P0174,P0175; System Too Lean (Bank 1); 2006 MY IS350 [08/2005 - ] DTC System too rich ( Bank 1 & Bank 2 )
26 Aug 2017
P0172 code to rich please help!
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Traction control = code P0172 and P175??
19 Jul 2014
Check engine light Code P0172
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More results from www.clublexus.com

Dirty Mass Air Flow Sensor P0171, P0172, P0174 Codes - YouTube

? 8:09
https://www.youtube.com/watch?v=LJSx2cDoFn4
Jun 4, 2014 - Uploaded by RomanAutomotive
A common cause for lean condition codes is simply a dirty Mass Air Flow Sensor. Since I have been testing ...

code p0172 on my 2005 Lexus GX470 Google Search

Posted on Mar 13, 2018

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P0172 LEXUS - System Too Rich Bank 1
Possible causes
Faulty front heated oxygen sensor
Ignition misfiring
Faulty fuel injectors
Exhaust gas leaks
Incorrect fuel pressure
Faulty Mass Air Flow (MAF) sensor
https://www.autocodes.com/p0172_lexus.html

Posted on Mar 13, 2018

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Posted on Jan 02, 2017

kayzack519
  • 226 Answers

SOURCE: Had some body work done

sounds like you need a couple more sensors. Abs light/brake may be on due to abs wheel sensor. VSC would be a steering angle sensor. skid control has its own sensor. I assume your accident also involved the wheel or wheels (some type of impact or hard jarring). The sensors arent cheap and they are easy to fix, they need to step up and do the right thing

Posted on May 21, 2011

  • 2 Answers

SOURCE: Engine light VSC light and VSC Trac light on on Lexus GX 470

how to solve the problem of p0031

Posted on Nov 28, 2012

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