Question about 1999 Ford Taurus

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I redently got an oil change, then got gas and

I recently got an oil change, then got gas and overfilled the tank slightly and drove a couple of blocks home. The next morning noted the service engine light on...went to Auto Zone. One person said it might be vacuum line, another try came up P140 EGR. I thought I may have caused it by the gas overfill..it is running fine so far, but I always seem to get ripped off by the auto mechanic so hopefully someone can help. Thanks, Barbara. I did try a new gas cap, but it didn't help.

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P0140 is downstream oxygen sensor (Bank 1, Sensor2) not Egr. It is a coincidence that it came on after you filled up. Try erasing the codes and see if it returns. If it does, replace the o2

Posted on Mar 11, 2009

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