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 > Ram DEF guage problem

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leatherhead612

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Posted: 01/12/18 08:54pm Link  |  Quote  |  Print  |  Notify Moderator

RAM owners:
Have yall ever had your DEF level guage not work properly? I put 5 gallons in the other day, and it registered full. This am I cranked the truck and it said on the screen restricted to 5mph in 200 miles.. fill DEF. I drove the truck around the neighborhood and the level in the guage slowly rose but never went to full (maybe 1/2 tank and it took almost 10 mins to get to 1/2 full. My truck is a 2014 2500 Mega.

Ron3rd

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Posted: 01/12/18 09:32pm Link  |  Quote  |  Print  |  Notify Moderator

No problems yet with mine


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Cummins12V98

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Posted: 01/12/18 09:49pm Link  |  Quote  |  Print  |  Notify Moderator

If you are under 100k take it to the dealer.


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Posted: 01/12/18 11:04pm Link  |  Quote  |  Print  |  Notify Moderator

Have heard of it on Fords. The fix was to replace the level sensor.

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spoon059

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Posted: 01/13/18 06:12am Link  |  Quote  |  Print  |  Notify Moderator

Mine is very inaccurate, but I've never experienced anything like what you are describing. Usually mine will say full for several thousand miles, then suddenly start dropping over the next several thousand.


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SweetLou

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Posted: 01/13/18 07:20am Link  |  Quote  |  Print  |  Notify Moderator

I'm starting to wonder also. Mine said 1/2 full which usually takes one box of def. I over filled last time. I do know I can go 1500 mile on one box so now I am also checking by the mileage.


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1320Fastback

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Posted: 01/13/18 08:29am Link  |  Quote  |  Print  |  Notify Moderator

Not on a street vehicle but we have had a handful of the exact same problem with Cummins powered equipment. DEF reads low, fill tank, DEF reads full, alarms keep going off and engine de-rates. Changing the sensors in the tank fixes the problems, some have had reoccurred occasionally.

Our fleet mechanics first will drain the DEF and flush twice with distilled water before changing the sensor. This has fixed a couple of the machines. Must of been dirt or contamination.


1992 D250 Cummins, 5spd, 4"' straight piped, sensors deleted, airbags, DAP injectors, 18cm.


blofgren

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Posted: 01/13/18 09:02am Link  |  Quote  |  Print  |  Notify Moderator

spoon059 wrote:

Mine is very inaccurate, but I've never experienced anything like what you are describing. Usually mine will say full for several thousand miles, then suddenly start dropping over the next several thousand.


Mine does exactly this too.


2013 Ram 3500 Megacab DRW Laramie 4x4, 6.7L Cummins, G56, 3.73, Maximum Steel, black lthr, RAM 20k sliding hitch, Retrax, Linex, and a bunch of options incl. cargo camera
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Learjet

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Posted: 01/13/18 02:33pm Link  |  Quote  |  Print  |  Notify Moderator

blofgren wrote:

spoon059 wrote:

Mine is very inaccurate, but I've never experienced anything like what you are describing. Usually mine will say full for several thousand miles, then suddenly start dropping over the next several thousand.


Mine does exactly this too.


That is the way it is designed...the gauge is not linear...see below

https://youtu.be/czJZuc8ThhI


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Cummins12V98

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Posted: 01/13/18 07:45pm Link  |  Quote  |  Print  |  Notify Moderator

Mine stays on full for quite a few miles then slowly drops. No issues so far.

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