So my 2012 truck has its first error. I just got this truck, it replaced my 2011 truck that i had so many problems with.
So here is the error:

- IN 50 MILES, SPEED LIMITED TO 50 MPH...EXHAUST FLUID SYSTEM FAULT.

So I took it to my local Ford dealership where I purchased the truck and they checked the fluid and it is full. So they are doing some research. I am just hoping this is not the start to another pain in the *** truck. If anyone has this same problem i would really appreciate the feed back.

Thanks again to all of the my fellow Ford owners.

rodney

 

Hopefully just a sensor.
If that's the case, I'm disappointed in Ford though because they should have resolved these DEF sensor issues prior to the 2012 models.

In my opinion that is...

 

man, sound like you have bad luck.

 

Wow, that's some bad luck! What sort of issues did you have with your first one?

By that logic nothing should ever break outside of the first model year, right? It's mechanical, and it can break.

 

I suppose it's early to jump to a conclusion over the 2012 sensors.
Point is, the technology should be improved for the 2012 models.

 

These threads still make me cringe. This is ONE of the reasons I tuned my truck. No a single CEL since Dec 2010. Good luck!

 

Dang, it's starting to look like -
yendor=charlie brown, truck=football, Ford=Lucy

 

Um....

 

Picked up my 2012 F-250KR in December the DEF faulted first day of ownership threatening to go into limp mode and limiting speed to 50 MPH. Since delivery of the truck it has been back to the dealer three times and again DEF fault warning is back again making this number four. The DEF fault warning and mileage count down to the 50MPH limit never goes through with the threat it seems to reset itself only to return randomly. With that said the truck is used for business and I cannot afford to have unreliable business equipment threating limited performance. If an employee threatened me with limited performance they we be let go on the spot. The situation is unacceptable and truck will go back to the dealer for good with a demand of replacement for a "Zero Defect" truck tomorrow Monday. <?xml:namespace prefix = o ns = "urn:schemas-microsoft-comfficeffice" /><o></o>
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I was notified on March 8th there is a fix for this problem. Ford posted something to their dealerships on the March 7th the same day I had my problem. I am beling told it is a software upgrade. From what I understand this is a known problem and this will solve the problem. I am taking my truck in tomorrow for the fix. I will keep you posted

 

Let's hope that fixes it, sorry you had the issue. I'm sure you're feeling a little snake-bit by now........

 

I hope this isnt gonna be the casr for me when i take delivey. Is it safe to presume it has all the latest and greatest software coming straight from the factory? Or does dealer do the upgrades?

 

I seem to remember that a year or year and a half ago that some of the DEF systems were damaged during transport.
Apparently the lines (or something) got banged up when the carrier tied the truck down or while loading. Don't remember, but the point is if I were getting a new one I would crawl under it and inspect for physical damage.

 

Two things...First, the damaged DEF lines were very early in the roll out of the 2011 trucks. It was a problem with the way the trucks were being tied down when loaded on the rail cars in Kentucky. The tie down procedure was changed and the problem vanished. Highly unlikely it has returned after shipping 400,000 trucks...

Second, the NOX sensor issue must be caused by extremely tight EPA tolerances and a not so good sensor/software match. During Winter 2011, there were some problems with trucks located mostly in extreme cold climates. Living in Michigan, I did not have the problem...last year...My bad NOX sensor issue showed up this year, during mild 30 degree F weather...and it has been in the shop twice for repair of that component. The programming that was supposed to take care of this particular problem was released in April 2011. It did take care of most of the problems but evidently the qualkity control on the NOX sensor is still sketchy...

The good news...it is emissions related and Ford has to fix those under warranty

Regards

 

One sure fire way too get rid of it, buy the delete, it does nothing but save you money in the long run (and in a small soft voice) voids the warranty too still worth it in my opinion