Def Failure
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Senior User
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Def Failure
My instrumentation warning screen is showing: "In 87 miles speed limited to 50 MPH. Exhaust fluid empty."
I went to fill my Def Tank and it is full from the last time. Anyone know what's causing this???
I went to fill my Def Tank and it is full from the last time. Anyone know what's causing this???
Prolocutor
Joined: Jan 2009
Posts: 13,618
Likes: 1,247
From: Western MA
It would seem that you refilled last time before the DEF level got below the half mark. But refilling too often the computer never sees a drop and thinks the truck is not using any DEF at all causing the error. From what I've read, there is no way for anyone but the dealer to reset this. Once they do, make sure not to fill the DEF next time until it's at least at under the half way mark to prevent this from happening again.
Lead Driver
Joined: Jan 2005
Posts: 7,782
Likes: 221
From: Huntington Indiana
.just had that somewhat same problem. Fix was reset computer. No codes showing. It was telling me I had 200 miles. Filled with only 1 gal of def instead of 5 gal.
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Super Moderator
Joined: Aug 2008
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From: Frederick, MD
wonder if removing the battery cables would be of any benefit since they can't get the truck in.
Any other service depts. nearby?
Any other service depts. nearby?
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From: North Central Washington
It would seem that you refilled last time before the DEF level got below the half mark. But refilling too often the computer never sees a drop and thinks the truck is not using any DEF at all causing the error. From what I've read, there is no way for anyone but the dealer to reset this. Once they do, make sure not to fill the DEF next time until it's at least at under the half way mark to prevent this from happening again.
Official Ford Rep
Joined: Oct 2010
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Did you drop by your dealership this morning? What's your truck's model year/mileage? I'll research some ways to help out.
Crystal
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Good news, I just received a call from the dealership and my truck is ready to pick up.
They said that they were able to put five gallons of DEF in it and that it was working fine now. I assume it must have had some ice in the fill tube when I tried to fill it even though I did squeeze the fill tube along it's entire length and it felt unrestricted. Maybe an air bubble? Anyway, thanks for all the help and suggestions!
They said that they were able to put five gallons of DEF in it and that it was working fine now. I assume it must have had some ice in the fill tube when I tried to fill it even though I did squeeze the fill tube along it's entire length and it felt unrestricted. Maybe an air bubble? Anyway, thanks for all the help and suggestions!