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Air Temperature Sensor Fault

Discussion in 'LamborghiniChat.com' started by sabregl, Jun 4, 2010.

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  1. sabregl

    sabregl Rookie

    Mar 2, 2010
    25
    Alberta, Canada
    Full Name:
    Gregg
    #1 sabregl, Jun 4, 2010
    I have been out driving and enjoying my 99 Roadster but I find after 20 minutes or so both my R & L CEL comes on. The DTC code reads P0111 which is an Air Temperature Sensor Fault. If I check the number of CEL flashes by turning the ignition key 3 times it comes up as 23 flashes which = OBDII System Failure. I can erase the code but it keeps coming back. I also read somewhere that it could be the interior climate control air sensor but I don't know. I find it odd that both banks light up at the same time because I doubt both sensors are failing at the same time. I would really appreciate any thoughts anybody has on this so I can get her fixed up.

    Thanks.
    Gregg
     
  2. ONEOFEW

    ONEOFEW Formula Junior

    Jan 19, 2006
    835
    LA
    Full Name:
    Steve
    #2 ONEOFEW, Jun 4, 2010
    Honestly I think your OBDII device is misleading you. You really need to hook it up to LDAS to pinpoint the problem.
     
  3. ilconservatore

    ilconservatore F1 Veteran

    May 18, 2009
    8,369
    Cincinnati Ohio
    #3 ilconservatore, Jun 4, 2010
  4. ilconservatore

    ilconservatore F1 Veteran

    May 18, 2009
    8,369
    Cincinnati Ohio
    #4 ilconservatore, Jun 4, 2010
    are you turning the key 4 times or 3? the 4th time you have to leave it switched on
     
  5. gday

    gday Formula 3

    Sep 10, 2004
    1,086
    CA, USA - NSW, AUS
    Full Name:
    Mick
    #5 gday, Jun 4, 2010
    Last edited: Jun 4, 2010
    Not a chance.

    Not if they share the same ground ;-)

    -mick
     
  6. sabregl

    sabregl Rookie

    Mar 2, 2010
    25
    Alberta, Canada
    Full Name:
    Gregg
    #6 sabregl, Jun 4, 2010
    Do you have any thoughts as to where I should be looking for a bad ground? I like your theory because the R & L CEL is definitely intermitent and they always come on together.
     
  7. gday

    gday Formula 3

    Sep 10, 2004
    1,086
    CA, USA - NSW, AUS
    Full Name:
    Mick
    #7 gday, Jun 4, 2010
    Last edited: Jun 4, 2010
    The bundle has a ground in the back middle of the plenums. But you should be able to trace the actual wires to confirm. And confirming you have consistent ground from battery/frame to engine would not be a bad idea too.

    -mick
     
  8. sabregl

    sabregl Rookie

    Mar 2, 2010
    25
    Alberta, Canada
    Full Name:
    Gregg
    #8 sabregl, Jun 7, 2010
    Thanks Mick, I'll check that out. I did notice after driving it around this evening that everything was great driving around the city until I took it out on the highway and starting going through the gears. When I was shifting from 2nd to 3rd at approx 5500rpm the light came on. This also happened one of the previous times so that's why tried it again and sure enough I got a light. Does this help explain a possible cause?
     

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