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Check Engine Light

I have a 1999 C280. The check engine light seems to come on when the gas tank gets down to about half full. The light goes out when I fill the tank. The car has no other symptoms. What is going on? and how do I fix it?

Thanks,

EJ in NJ

Reply to
Ernie Willson
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There was a time where contaminated gas was sold... and the result was bad fuel gauge sensor... a couple of years ago, I think.

Have you tried replacing your fuel cap to see if this solve the problem? If this still does not fix it, try a big bottle of fuel injector cleaner in the tank to see if it clears out the fuel gauge error.

Reply to
Tiger

Tiger

Thanks for your comments

This morning I had the annual New Jersey Auto inspection. The "check engine" light was out. As part of the Inspection they check the gas cap. I guess it was OK since they passed the car. Driving home the "check engine" light came on again.

EJ > There was a time where contaminated gas was sold... and the result was bad

Reply to
Ernie Willson

You can go to the Autozone and get their OBD II Scanner and hook it up to your car to get the readings. They loan it out for free.

Reply to
Tiger

Reply to
Ernie Willson

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