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CEL and loose gas cap on 430

Discussion in '360/430' started by john0719, Apr 10, 2009.

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  1. john0719

    john0719 Rookie

    Feb 8, 2007
    23
    Taipei & Cupertino
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    John L
    #1 john0719, Apr 10, 2009
    Last edited: Apr 10, 2009
    I know this was the infamous problem on 360s, but I seem to have this problem as well on my 2007 430. When the light came on the first time around, I had tighten the gas cap and CEL went away the next time I started the car. Recently, the CEL came back on again after I refueled, so I tighten it again. However, this time it stayed on, even after 3 cycles of starting and shutting off the engine. Does any other 430 owners have this problem? Btw, the car drives perfectly fine.
     
  2. Ricambi America

    Ricambi America F1 World Champ
    Sponsor Owner

    Dec 7, 2003
    16,420
    Winston Salem, NC
    #2 Ricambi America, Apr 10, 2009
    I assume it is like most OBDII systems in that simply starting and shutting off the car is not sufficient. It requires a full drive cycle (or 3?) with the cap closed properly.
     
  3. hardtop

    hardtop F1 World Champ

    Jan 31, 2002
    11,293
    Colorado
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    Dave
    #3 hardtop, Apr 10, 2009
    I had a CEL once after refueling and thought it was probably a loose gas cap but continued driving didn't make it go out. I continued to drive it for months since the car ran fine and I'm about 125 miles from the dealer. When I got finally got the car in the codes were: PO464, P2069 fuel level sensors and U0142, U0144 communication with control module errors. The tech cleared them and I've had no recurrence so far (about 1 year).

    Dave
     
  4. 360racer

    360racer Karting
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    Nov 19, 2008
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    #4 360racer, Apr 10, 2009
    How about trying to disconnect the battery for 60secs let the systems reset and connect it again... i Did just that 2 days ago cause my engine light came on for no reason and drove the car tonight and so far nothing..
     
  5. Barrister

    Barrister Formula Junior

    Aug 11, 2008
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    The OC
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    "Big D"
    #5 Barrister, Apr 10, 2009
    Last edited: Apr 10, 2009
    Make sure that the rubber gasket on the inside of the gas cap is still in place and not corroded. Some times it can even fall out without you even knowing it if it has deteriorated badly enough. That trips the sensor and will keep the light on even after you tighten the cap. The gasket can get damaged by overtightening too.
     
  6. GCalo

    GCalo F1 Veteran

    Sep 15, 2004
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    #6 GCalo, Apr 10, 2009
    In other words always make sure your rubber is on and working properly!
     
  7. Barrister

    Barrister Formula Junior

    Aug 11, 2008
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    "Big D"
    #7 Barrister, Apr 10, 2009
    D'Oh! I set it up again didn't I!
     
  8. GCalo

    GCalo F1 Veteran

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    #8 GCalo, Apr 10, 2009
    Thank you very much (done in the Elvis tone)!
     
  9. JOEA2

    JOEA2 Formula 3

    Feb 2, 2006
    1,222
    Staten Island, N.Y./ Sea Girt,N.J.
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    #9 JOEA2, Apr 10, 2009
    They claim that they just fixed mine. They said that it was a loose O2 sensor. Time will tell.
     
  10. Barrister

    Barrister Formula Junior

    Aug 11, 2008
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    "Big D"
    #10 Barrister, Apr 11, 2009
    I also had a bad connection in my evaporation system that they corrected. Who knows . . . .
     
  11. RobD

    RobD Formula 3

    Nov 10, 2003
    1,182
    USA
    #11 RobD, Apr 11, 2009
    If it's bad, can you buy just the gasket or must you buy the whole gas cap? TIA
     
  12. john0719

    john0719 Rookie

    Feb 8, 2007
    23
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    John L
    #12 john0719, Apr 11, 2009
    The CEL finally went out this morning. Keeping my fingers crossed......................
     
  13. Derek Trotter

    Derek Trotter Formula 3
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    Jul 28, 2007
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    #13 Derek Trotter, Apr 11, 2009
    There's no tiring of GCalo is there! :)
     
  14. GCalo

    GCalo F1 Veteran

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    #14 GCalo, Apr 11, 2009
    No and I am not going to stretch my luck either!!!
     
  15. Derek Trotter

    Derek Trotter Formula 3
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    #15 Derek Trotter, Apr 11, 2009
    AAAAAAAAAAAAHHHHHHHHHHHHHHHH.................. *Slits wrists*
     
  16. GCalo

    GCalo F1 Veteran

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    #16 GCalo, Apr 11, 2009
    You could do it easier with some form of gas!
     
  17. CSISNEXT

    CSISNEXT Karting

    Dec 19, 2007
    67
    #17 CSISNEXT, Apr 11, 2009
    Had the same exact problem on my 07 F430. Brought it in to my dealer who took care of it - once and done. Not sure if it's an official "campaign", but it seemed to be a well known issue at the dealer; involved a sensor adjustment or replacement (not sure which). Hope this helps.
     

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