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The def gauge is stuck on empty but the tank is full. I

Customer Question
The def gauge is...

The def gauge is stuck on empty but the tank is full. I assume

Mechanic's Assistant: What's the make/model/year of your truck? Engine type?

2014 dodge 3500 Laramie. 6.7

Mechanic's Assistant: Are you fixing your truck yourself? What have you tried so far?

We've cleared the codes, none of which pertained to the level of def or anything else related to the def system. So far that's all we've done. After clearing the code it drove about 25 miles and the gauge went from full to empty and we got another limo mode message.

Mechanic's Assistant: Anything else you want the truck mechanic to know before I connect you?

The gauge will work occasionally but then just go to empty. We drove about 1500 miles with a full tank of def. the full def message came on and the gauge went to empty. It help about 1/2 a gallon at the most when we tried to refill the def tank.

Submitted: 10 months ago.Category: Medium and Heavy Trucks
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9/26/2017
Technician: roybelding, Shop Foreman Freightliner trucks replied 10 months ago
roybelding
roybelding, Shop Foreman Freightliner trucks
Category: Medium and Heavy Trucks
Satisfied Customers: 7,930
Experience: Shop Froeman for Freightliner Trucks
Verified

hello, my name is ***** ***** I will be glad to assist you. please allow me a couple of minutes to gather some basic info.

Roy

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Technician: roybelding, Shop Foreman Freightliner trucks replied 10 months ago

ok

what codes did you clear???

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Customer reply replied 10 months ago
Are you there?
Technician: roybelding, Shop Foreman Freightliner trucks replied 10 months ago

yes I am here waiting for an answer to my request

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Customer reply replied 10 months ago
No I don't want a $26 phone call.
Technician: roybelding, Shop Foreman Freightliner trucks replied 10 months ago

that is the site sending all that stuff, not me

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Customer reply replied 10 months ago
what about the def gauge stuck on empty?
Customer reply replied 10 months ago
I don't see any request from you
Technician: roybelding, Shop Foreman Freightliner trucks replied 10 months ago

thats why I a asking for the codes, it will lead me in the right direction.

my previous question

ok

what codes did you clear???

it could be the header in the tank or wiring

Roy

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Customer reply replied 10 months ago
I don't recall the exact code... maybe P035... not positive. That was a few days ago..
Customer reply replied 10 months ago
We had a few codes but most were related to a bad battery we replaced about a month ago. When I looked up the P code it was an unclassified code was all it said.
Customer reply replied 10 months ago
Are you still there?
Customer reply replied 10 months ago
Hello???
Technician: roybelding, Shop Foreman Freightliner trucks replied 10 months ago

if it comes back I need that code.

Yes, I am here. please be patient. we are answering many questions

a lot of times the header is the issue for the def tank, the calcification builds up in the tank and restricts the readings.

check the connections at the top of the tank for any damage pins. also if anyone spilled def on the top of the tank and it hit the connector, the wire harness is damaged.

Roy

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Customer reply replied 10 months ago
Where is that located? The def tank...
Technician: roybelding, Shop Foreman Freightliner trucks replied 10 months ago

have you never filled th tank with def fluid??? let me check. it is either on the lft frame rail or rear

Roy

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Technician: roybelding, Shop Foreman Freightliner trucks replied 10 months ago

look for the cap marked def only.

Roy

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Customer reply replied 10 months ago
I know where that is... the only way to spill def on top of the def tank would be from under the truck. There is no wiring harness on the top of that tank either.
Technician: roybelding, Shop Foreman Freightliner trucks replied 10 months ago

there should be a header. that is like a fuel module in a fuel tank. it has a hose for the def and a connector for the unit.

let me get a picture

Roy

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