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check engine ligh

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by aycee, Oct 22, 2007.

  1. aycee

    aycee New Member

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    Last week the "check engine light" in our prius came on.
    We took it to the dealer and the technician pulled the code wich said:

    P0446 evap system malf

    The dealer said the technician could not run a level 2 evap system check because our gas tank was full.
    I had to return when the gas tank was between 1/4 and 3/4 full.

    Today I took it back in and dealer called me to say there is a sensor broken wich would cost over $600.
    On top of that there are labor costs cause they need to remove the gas tank.
    Our prius is 3 and a half years old and has 30k miles.

    My question is, what's wrong with the car? Is dealer on the level? Any chance of this being covered by warranty?

    Any information you folks could give me about this would be greatly appreciated.

    Thanks,

    Alan
     
    #1 aycee, Oct 22, 2007
  2. kocho

    kocho Member

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    2008 Prius
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    Was the P0446 the only code? It just might be a loose gas cap... P0450, P0451, and P0500 codes are related to some sensors malfunctioning and if you did not have these codes, then it is unclear what the problem is.

    I'd drive about some more, fill-up some gas and make sure the gas cap is properly seated and that it itself passes the pressure (?) check that most diagnostic centers can do for you.

    Let us know how it turns out.

    <div class='quotetop'>QUOTE(aycee @ Oct 22 2007, 11:44 AM) [snapback]528844[/snapback]</div>
     
    #2 kocho, Oct 24, 2007
  3. firepa63

    firepa63 Former Prius Owner

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    That would be my guess, a loose gas cap. It's the most common problem to trigger the Check Engine light, even on conventional cars.
     
    #3 firepa63, Oct 24, 2007
  4. aycee

    aycee New Member

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    Well I went to go get the car, because the part was on back order and it would take several days.

    The thing is, the light is not on anymore, and it hasn't come on these past 2 days.

    So I guess should I just drive it a bit longer and see if it comes back on instead of spending the $$$ to have the sensor replaced.

    Thanks for the replies they helped a lot
     
    #4 aycee, Oct 25, 2007
  5. firepa63

    firepa63 Former Prius Owner

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    If it was a loose gas cap, it takes several on/off cycles for the code to clear. I can't remember the number of cycles, someting like 3 or 4. I'm pretty sure that's what you had for a problem.
     
    #5 firepa63, Oct 25, 2007
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