Question about Ford Expedition

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I have a 2006 Ford Expedition and I just filled the vehicle up with gas when the check engine light came on the next day. Also, the fail safe mode light illuminated. I took the SUV to Auto Zone where they said that codes P2112 and P2104 was reading on their analyzer. The truck appears to be running okay but not sure what the problem is? Any help would be appreciative.

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Replace your gas cap,Disconect your battery for 30 seconds (if you have secure anti-theft system follow instructions for disconecting the battery found in your owners manual.Reconect your battery codes will be cleared.

Posted on Mar 22, 2011

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Posted on Jan 02, 2017

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1 Answer

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I encountered the same problem, my engine fail safe mode light came on and shut the car down. I took my car to my mechanic and he found the solution to the problem. The car needed a throttle body cleaning and the fuel filter needed to be replaced. After having my truck serviced my mileage increased from 14.6 mpg to 15.4 mpg
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