DEF low light stays on, keeps saying xxx miles to empty yet full? - Ford Powerstroke Diesel Forum
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post #1 of 5 Old 08-24-2013, 05:03 PM Thread Starter
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DEF low light stays on, keeps saying xxx miles to empty yet full?

Its a 2011... said 600 miles to empty, so i added 2.5 gallons, which it took the whole bottle... then it never went away, and keeps saying 400 miles to E and 200 miles to E etc.... Went to add another 2.5 gallon container, and i don't think it took ANY of it, if it did, only a few ounces. Is it a sensor?


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post #2 of 5 Old 08-24-2013, 05:49 PM
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My truck had a check exhaust system code or speed will be reduced in 50 miles when it only had 700 miles on it. The code went away after another five miles down the road, after that tuned and deleted all the emissions bs and haven't had a issue since.
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post #3 of 5 Old 08-24-2013, 06:00 PM
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I think it's a faulty sensor. Sucks to have to deal with stuff like that but I bet it's nothing major.


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post #4 of 5 Old 08-26-2013, 08:21 AM Thread Starter
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thanks guys..

Talked to dealer today, they want to charge $106.xx/hr for checking the computer and DEF message. Said there was an issue with the DEF warning light keep coming up, but that there is an update. Gave them the VIN # so they're checking on it.... i guess to see if the Oasis report states it was performed or not.

If the truck has 76k miles on it, a 2011, isnt the computer part of the powertrain/engine? They seem to think the truck has no warranty on it left, when the engine should be 5 years/100k mile warranty.

They said that they'd have to hook up the computer "charge us for the time" just to see if any updates were performed, WTF? Aren't updates just like recalls? Maybe they're costs he's talking about are really the deductible for warranty repairs? I swear he said HOURLY costs though.


04 F350 XL
06 F350 Lariat SRW BPD oil cooler, ARP, sinister !egr, s&b intake
06 F350 Lariat C/C DRW 4" Silverline , BPD egr cooler, ARP studs, Garett powermax turbo
07 F550 XL c/c 12' ABC american landscaper
11 F350 Lariat C/C !dpf/doc, SCT 7015
14 F550 Lariat C/C Dump truck, !def/dpf, Flo-Pro, T1 Tuner, S&B intake 3200miles
16 F350 Lariat c/c Nov 2015
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post #5 of 5 Old 12-09-2013, 10:43 AM
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Guessing you have had this issue taken care of by now. Had an issue with the same message on my 12 and it came and went until finally, it came back on with like 15 miles left on the warning!!! Truck went into limp mode and drove it to the dealer. There is a TSB to recalibrate the computer and the fill level of the DEF bottle or something like that. That happened at about 600 miles and haven't had a problem since.

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