service def

[Larry Willard]

AlfaOBD list the following tests available. Haven't tried them so can't speak to the operation.
DEF Reductant Doser Pump Override test
DEF Pressure Line Heater test
DEF Tank Heater test
DEF Reductant Doser Prime Override Test.

Is this the one you are referring to.

https://www.alfaobd.com/index.html

 

[Ozymandias]

Is this the one you are referring to.

https://www.alfaobd.com/index.html

Yes it is, a very good software for all kinds of diagnostics around your truck. Pays out the first time you use it.
You can also do a lot of programming with it.

 

[Larry Willard]

After I did all I could, I took truck in to dealer and they reflashed the PCM. Hope that is all that was needed, 70 miles back home and 10 or 15 they drove and so far so good.
Larry

 

[Wayne M.]

After I did all I could, I took truck in to dealer and they reflashed the PCM. Hope that is all that was needed, 70 miles back home and 10 or 15 they drove and so far so good.
Larry

thats in line with what im seeing with the Fords. Perhaps they managed to relax a certain nox readback parameter?
Interesting that even they put 10-15 miles on, probably needed to hit the drive cycle. That’s a lot of driving for a crew that probably does it often.

 

[Larry Willard]

Well maybe they did change parameters in the update, I wasn't too sure that was all it would need, but hopefully that will be the end of the problems.

Larry

 

[Jwags]

I’m driving back to my military base and my 2018 Dodge Ram 3500 DEF limp mode warning came on as well as the check engine light. I pulled the code and it was a P207F code and reset it but came back on again, and it said permanent so I’m waiting for the dealership to open while I’m currently 1200 miles from my base and my leave is up in a few days, so needless to say not impressed with the Ram products. I just hit 18,000 miles. Just one Veterans and service members opinion, although when it’s driving normal no issues, I just never had $50K machine and it have the check engine light come on it. Any recommendations or thoughts for a fix would be appreciated, good, bad or ugly.

 

[Timd32]

I’m driving back to my military base and my 2018 Dodge Ram 3500 DEF limp mode warning came on as well as the check engine light. I pulled the code and it was a P207F code and reset it but came back on again, and it said permanent so I’m waiting for the dealership to open while I’m currently 1200 miles from my base and my leave is up in a few days, so needless to say not impressed with the Ram products. I just hit 18,000 miles. Just one Veterans and service members opinion, although when it’s driving normal no issues, I just never had $50K machine and it have the check engine light come on it. Any recommendations or thoughts for a fix would be appreciated, good, bad or ugly.

I sent you some info I have, check your inbox in a few.

Hope you get it figured out easily.

If able please post a resolution if you come up with one.