Code P20E8 DEF System

[alnevie]

How to clean system with cloudy DEF fluid. The engine light is on but no other symptoms. The 2020 Ram 1500 3.0 Ecodiesel has 80,000 miles. Anyone else had this problem?

 

[TC Diesel]

By completely changing the DEF fluid, likely just crystalized DEF Injector.

 

[TC Diesel]

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[BTdriver]

To clean the injector: Get yourself a cheap steam cleaner off Amazon and spray it. Comes right off. Oh, and do the same to the hole it's mounted in.

DEF does have a service life limit of about 6mos, give or take depending on how hot in your area, from when it was poured in the tank. Probably best to drain, flush, and start over.

 

[TC Diesel]

To clean the injector: Get yourself a cheap steam cleaner off Amazon and spray it. Comes right off. Oh, and do the same to the hole it's mounted in.

DEF does have a service life limit of about 6mos, give or take depending on how hot in your area, from when it was poured in the tank. Probably best to drain, flush, and start over.

That's for legal and manufacture purpose only. I have had acceptable and good d e f. even after 10 years of storage at room temperature.

 

[BTdriver]

TC-Diesel: Your talking storage inside an environmentally controlled building. I'm talking once it's poured in the truck, being subject to summer heat, winter cold, freezing and thawing.

 

[TC Diesel]

TC-Diesel: Your talking storage inside an environmentally controlled building. I'm talking once it's poured in the truck, being subject to summer heat, winter cold, freezing and thawing.

Ok...you correct..on that...

 

[camolad]

......................... View attachment 4559

What is that and where is it located?

 

[TC Diesel]

It's located in the exhaust downstream of the DPF, check youtube for videos on removing and cleaning..

 

[camolad]

Ok...you correct..on that...

DEF can freeze and thaw as much as it wants to. It will not affect it. DEF is mostly water. You should never fill the reservoir to its maximum because DEF will freeze at 11 degrees farenthite, and may crack the reservoir. As far as shelf life is concerned, you can store it indoors until it becomes cloudy. Have you heard of anyone who had DEF freeze in their vehicles? It freezes at 11 degrees Farenhy. Manufacturers of DEF put an expiry date on the containers.
Manufacturers put a best-before date on salt, lard, maple syrup and honey. Lol, all of these food items will last forever. They recently found a container of Honey that was placed in an Egyptian pyramid that was dated over 2000 years ago. They tested it, and it was still good for Human consumption.
And you guys are worried about DEF, which is a few years old and isn't cloudy.

How to clean system with cloudy DEF fluid. The engine light is on but no other symptoms. The 2020 Ram 1500 3.0 Ecodiesel has 80,000 miles. Anyone else had this problem?

How to clean system with cloudy DEF fluid. The engine light is on but no other symptoms. The 2020 Ram 1500 3.0 Ecodiesel has 80,000 miles. Anyone else had this problem?

It's located in the exhaust downstream of the DPF, check youtube for videos on removing and cleaning..

What is the part called?

 

[BTdriver]

DEF can freeze and thaw as much as it wants to. It will not affect it. DEF is mostly water. You should never fill the reservoir to its maximum because DEF will freeze at 11 degrees farenthite, and may crack the reservoir. As far as shelf life is concerned, you can store it indoors until it becomes cloudy. Have you heard of anyone who had DEF freeze in their vehicles? It freezes at 11 degrees Farenhy. Manufacturers of DEF put an expiry date on the containers.
Manufacturers put a best-before date on salt, lard, maple syrup and honey. Lol, all of these food items will last forever. They recently found a container of Honey that was placed in an Egyptian pyramid that was dated over 2000 years ago. They tested it, and it was still good for Human consumption.
And you guys are worried about DEF, which is a few years old and isn't cloudy.

First off, the conversation is about AFTER the DEF has been poured in the truck, so talking points about storage are a different issue. That being said, I agree that the "12-18 months" that's advertised is overly conservative.

-Every winter my DEF (again, what's in the truck) freezes and thaws several times, that's normal for Colorado. I don't worry about it since they come with a tank heater.
-Multiple freeze/thaw cycles has an effect, albeit small, on consistency and effectiveness of DEF. Look it up.
-Heat is the biggest culprit of DEF degradation. Causes breakdown of the urea (indicated by release of ammonia) and crystallization - clogging of pump, injector, and SCR grid, along with greatly reducing effectiveness.