how long do I need to drive sts 2001 to get SES light while gas cap is removed
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  • 2 Post By Submariner409
Cadillac Seville / Cadillac Eldorado Forum Discussion, how long do I need to drive sts 2001 to get SES light while gas cap is removed in Past Cadillac Vehicle Discussion; I need to check if I get SES light on when a code is set. I removed gas cap had ...
  1. #1
    john19999 is offline Cadillac Owners Fanatic
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    how long do I need to drive sts 2001 to get SES light while gas cap is removed

    I need to check if I get SES light on when a code is set. I removed gas cap had have been driving for a couple of days (todaul drove about 20 miles). So far I have not seen code set. Does anyone knows how long a car needs to be driven before a code is set. Also is there any other easy way for getting the code set that can turn SES on like removing any hose?

    Thanks
    John

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  3. #2
    Submariner409's Avatar
    Submariner409 is online now If it won't run, stick on fender vents
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    Re: how ling do I need to drive sts 2001 to get SES light while gas cap is removed

    The gas cap is part of the EVAP system - the system is monitored - so a loose gas cap normally sets off a fuel tank pressure/vacuum code. In your car the EVAP control solenoid is on the right (rear) side of the throttlebody. It has a vacuum hose and electrical connector sticking out of its end. You could disconnect the vacuum line from the solenoid and cap the nipple. The fuel tank pressure sensor should then trip an EVAP code. I would think that a couple of days with no gas cap would have tripped at least ONE code !!!
    Tankboy40 and Tankboy40 like this.

  4. #3
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
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    Re: how ling do I need to drive sts 2001 to get SES light while gas cap is removed

    Unplug the IAT sensor. That should trip the SES light almost immediately I believe.

  5. #4
    MoistCabbage's Avatar
    MoistCabbage is offline Cadillac Owners 10000+ Posts
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    IAT sensor is integrated into the MAF in '00+ cars. Disconnecting that will trigger the light. So will disconnecting the EGR valve, pulling the AIR pump fuse..... Anything emissions related.

  6. #5
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
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    Re: how ling do I need to drive sts 2001 to get SES light while gas cap is removed

    True. I was thinking pre-2000.

  7. #6
    PeterS is offline Cadillac Owners Member
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    Re: how ling do I need to drive sts 2001 to get SES light while gas cap is removed

    Hi
    The same thing happend to me and I drove at different speeds for about 80 miles.
    Then It reset and I was able to get a Inspection. I bought a new GM Gas Cap before I Drove the car for the 80 miles.
    I am no expert just passing on my experience.
    Pete

  8. #7
    Submariner409's Avatar
    Submariner409 is online now If it won't run, stick on fender vents
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    Re: how long do I need to drive sts 2001 to get SES light while gas cap is removed

    Thanks - it all goes into the great database (If anyone would take the time to look for it).

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