Question about Chevrolet Cobalt

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The check engine light is on, on my 2005

The check engine light is on, on my 2005 Cobalt. The OBD2 code readers can't read the car at all. We have used 3 different units. The fuses all seem fine on the car.

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  • David Glen Harris Feb 07, 2010

    As I said the fuses are ok including the cig.ltr. fuse.

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Chech the cigatette lighter fuse

Posted on Feb 07, 2010

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With OBD2 there is about a thousand different possible generic codes, and way more than that manufacture specific codes.
It could be as simple as removing the gas cap while it was running. The computer reads it as a vapor leak, and turns the light on.
The best way find out what is turning the Check engine light on, is to scan it with a code reader or scanner2_bing.gif.
A lot of the big auto part stores have the capability to scan your computer2_bing.gif for free and give you the codes.
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http://www.my-car-computer.com/obd2.html

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