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My check engine light is on in my 2004 Bonneville what can cause that

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A lot of different things can cause it. Go to your local Auto store and they will plug a machine into your car under your driver side dash and read the codes telling what the problem is. If you think there is nothing wrong disconnect the battery for a few minutes and the light will reset and only come back on if there is a problem.

Posted on Nov 13, 2014


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2001 pontiac bonneville check engine light won;t go off

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Welcome to

Go to Auto Zone and they will check it for free as long as light is on

Thank you for using

Regards, Lee Davidian

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1 Answer

My check engine light just came on. I own a 1997 pontiac bonneville. What could be wrong that would make the light come on?

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1 Answer

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1 Answer

2004 Pontiac Bonneville Check Engine Light

do you fill the gas tank with the key on?

Try disconnecting the battery for 1/2 hour an then reconnect and drive for 10 miles. It may run rough for this period. This will clear codes from memory.

May 27, 2009 | 2004 Pontiac Bonneville

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