Question about 2004 Lexus LS 430

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2001 Lexus engine check light on VSC off light on

Had a problem with my 2001 lexus. VSC and check engin light on. Had car hooked up to a computer and got these codes....p0440 emission control malfunction.....p0441 perge flow fault.....p0446 vent circuit malfunction...how do i fix this problem

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  • 007kim Jan 27, 2009

    Had a problem with my 2001 lexus. VSC and check engin light on. Had car hooked up to a computer and got these codes....p0440 emission control malfunction.....p0441 perge flow fault.....p0446 vent circuit malfunction...how do i know what the code problems mean.

  • 007kim Jan 27, 2009

    Had a problem with my 2001 lexus. VSC and check engin light on. Had car hooked up to a computerand got these codes....p0440 emission control malfunction.....p0441 perge flow fault.....p0446 vent circuit malfunction...how do i fix this problem


  • lcarter56 Mar 14, 2009

    I have a 2001 Lexus LS 430. I changed the air filter to a K&N filter and after 30 mile later the check engin light came on. Had it checked for the code and was told bank 1 oxergin senser was out and had them clear the code to see if it would come back on. As i back out from the shop the VSC came on. They said they could not clear that code. I had the car for over a year and never had the lights on until i put the K&N filer on.

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You can actually google this by putting lexus code ### for each one it will tell you what each one means

Posted on Jan 27, 2009

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SOURCE: car codes

When you have P0440, P0441 and P0446, it is a very good bet that the fuel cap was loose, or the fuel cap rubber seal is compromised. You will get all three of those codes every time that the cap is loose. Always make sure that the fuel cap is as tight as you can get it after you refuel.

Posted on Nov 13, 2008

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I have a 2003 lexus ls 430 my check engine light came on with the vsc off, and exclamtion mark all at the same time and I don't know what that means?


Hi there:
When this comes on as it has it means: When the center differential is locked, VSC control turns off and the VSC OFF indicator illuminates. This is straight from the Lexus diagnostic chart.

The system is faulted in some way so you will need to have the fault memory read out, and then depending on what fault code or codes are stored will determine the type of diagnosis that will need to be performed.

A dealer would be your best bet to get the cause determined. Their scan tool, when hooked up to you vehicle will give them all of the information they need to rectify your condition. After the scan results are found, replacement parts or adjustments can be performed.


Hope this helps.

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Good luck.

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