Question about 2002 Audi A6

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Just purchased a 2002 A6. After fueling, the check engine light came on. Why?

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Did you have it runnning while you filled it up. If so give it a few days of running to clear it. These newer systems check the fuel tank pressure for certain values. High and low. If it was running while fuelling the pressure went too low and set the code. Good Luck

Posted on May 03, 2010


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Posted on Jan 02, 2017

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SOURCE: I need my check engine light to turn off in my 2002 Audi A6

You need to have the car scanned to address the issue that is causing the check engine light to come on. The computer will reset the check engine light once the issue has been addressed and there is not more issues. The scanner can also reset the light but if the problem is still there the light will just come on again. Good luck and hope this helps, Auto Zone scan free of charge. 

Posted on Sep 30, 2009

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check engine light will not come on until sensors are completely shot,this also goes for your mass air flow,had same issues with 99 beetle happened at 80,000 miles,changed all three items ended up with 35mpg after getting 24mpg before are cheap on ebay.

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