check engine VSC lights on
Thread Starter
Driver School Candidate
Joined: Oct 2018
Posts: 30
Likes: 2
From: NY
check engine VSC lights on
2005 Lexus GX -- My check engine and VSC lights came on this morn. I fiddled with the gas cap. No luck. I know the gas cap is usually the culprit and first thing to check. But my gas cap is only 4 months old. Is there a way to identify if it is in fact the gas cap? Other than replacing it? I'm in upstate NY and cold/warm weather on and off and wonder if that could damage the cap?
Should i suck it up and just replace it to see?
Should i suck it up and just replace it to see?
Last edited by gshort; Feb 8, 2019 at 06:15 AM.
Lexus Test Driver
Joined: Apr 2008
Posts: 1,058
Likes: 126
From: Illinois
2005 Lexus GX -- My check engine and VSC lights came on this morn. I fiddled with the gas cap. No luck. I know the gas cap is usually the culprit and first thing to check. But my gas cap is only 4 months old. Is there a way to identify if it is in fact the gas cap? Other than replacing it? I'm in upstate NY and cold/warm weather on and off and wonder if that could damage the cap?
Should i suck it up and just replace it to see?
Should i suck it up and just replace it to see?
First find out what code(s) you have.
If you dont have a scanner, Autozone can check your codes for free.
Thread Starter
Driver School Candidate
Joined: Oct 2018
Posts: 30
Likes: 2
From: NY
I checked all the vsv hoses and didn't see any lose or damaged. I realize it could be the VSV vacuum switching valve or air injection control circuit or even the ECM... but wanted to try the easy things before I brought it into Lexus and have $2k bill.
Lexus Test Driver
Joined: Apr 2008
Posts: 1,058
Likes: 126
From: Illinois
Most likely its a stuck AIC valve.
Known problem for these.
Ive seen kits here for that problem but i personally have no experience with those.
Rookie
Joined: Apr 2014
Posts: 69
Likes: 6
From: Maryland
This is the kit I have for my 08 GX470 from Hewitt Tech. Easy to install.
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