Question about 1999 Buick Century

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Changed oil and air filter now service engine soon light is on , only have 48,000 miles on car original owners

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  • Buick Master
  • 17,970 Answers

Its possible that you need reset the warningn message; how to...:

Century (1997-2001), Regal (1996-2001), Roadmaster (1995-1996)

To reset the "CHANGE OIL" light, turn the ignition switch to the run position with the engine off. Fully depress and release the accelerator pedal three times within 5 seconds. The light will flash twice and go out.

Hope helps to solve it. Keep in touch.

Posted on Jul 14, 2010

  • hodgson_kurt Jul 14, 2010

    Change oil light is not the problem though , it is the service engine soon light on the right side of the dash console . Is this considered the same thing ? we have changed the oil every 3,000 miles

  • ZJ Limited
    ZJ Limited Jul 14, 2010

    When turn ON the Check Engine, Service Engine Soon light, the simplest way is to visit your local dealer or a repair shop for
    proper diagnostic. They have all the equipment and information needed to
    diagnose and correct the problem. The problem might even be covered by
    the manufacturers warranty and possibly repaired free of charge. Some
    auto parts stores can also do the "Check Engine" light diagnostic for
    free.



    When it finds a problem in the
    electronic-control system that it can't correct, the computer turns on a
    yellow warning indicator
    that's labeled "check engine," "service
    engine soon" or "check powertrain." Or the light may be nothing more
    than a picture
    of an engine, known as the International
    Check Engine Symbol, perhaps with the word "Check." In addition to
    turning on the
    light, the computer stores a "trouble code"
    in its memory that identifies the source of the problem, such as a
    malfunctioning
    sensor or a misfiring engine. The code can be
    read with an electronic scan tool or a diagnostic computer, standard
    equipment
    in auto repair shops. There are also a number
    of relatively inexpensive code readers that are designed for
    do-it-yourselfers.


    Keep in midn that
    disconnecting the battery might reset the check engine light on some
    cars.
    However, instead of doing so, I'd recommend to bring your car to a
    dealer or a mechanic for proper diagnostic, and here is why:


    - not all cars will clear the code after disconnecting the battery

    - often, the problem may be actually covered by the warranty and
    repaired free of charge by your dealer. For example, if you have the
    code P0420 - Catalyst System Efficiency Below Threshold it's very
    possible that your catalytic converter is still covered by the original
    emission warranty and might be replaced free of charge (would cost you
    close to $1000 otherwise).

    - some problems, if not repaired in time may cause a serious damage and
    more costly repair.

    - the Readiness code will be erased, which may prevent your car from
    completing an emissions test.
    (Readiness code is an indication that certain emission control
    components of your car have been self-tested)

    - the radio, if code-protected, may be locked after disconnecting the
    battery

    - the "check engine" light will come back anyway if the problem still
    exist.

    Tell us news.

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