Bad One Box on a Freightliner Cascadia Part 1

Check engine light, Malfunction indicating light and Stop engine light were all on.
Always try to do a parked regen in order to see how the truck responds to temperatures and pressures inside the One Box. In some cases a parked regen will help clear the fault codes.
This One Box did have to come out in order to get a visual of the inside and the DOC filters.
These are the fault codes that were present:
SPN 3251 FMI 0 DPF Pressure out of range Very High
SPN 3251 FMI 2 DOC Inlet pressure sensor not plausible
SPN 3251 FMI 16 DPF pressure out of range high
SPN 3556 FMI 18 DOC inlet temp low
SPN 3246 FMI 15 DOC outlet temp high

[@michaelmatteson2811]

Great info for people needing to know these common issues with the 1-box. GHG14 and 17 are a vast improvement over the epa 10 models... I hate metering devices...

[@CarlosDieselElectric]

I agree. The EPA 10 isn’t my favorite, once they updated the DEF pump system it made things little easier to work on.

[@elandoncarey2920]

When running a doc face cleaning the software converts dpf zone lvl2 on its own when it starts the process. If you was to just exit out of a doc face cleaning 4 hour regen. It will stick in that condtion and not dose fuel on the next regular regen. So always make sure to stop the procedure and not click the x to close the screen.

[@petrovich3997]

Thank you for a great video! Very informative, keep them coming!

[@quocbinhduongnt8646]

thanks anh nhiều lắm anh ơi

[@verajavi12]

Did that program illustrated the DESIRED values u mentioned?

[@CarlosDieselElectric]

The program will show you temperatures and pressures on the after treatment. But you need to know what you are looking for and what you are looking at. What are you trying to do?

[@sanchez1472]

Great video... do you have an idea what might be the culprit of a intake manifold pressure. I currently have a tractor that has high intake pressure (33 psi)

[@CarlosDieselElectric]

What is the fault or fault codes?

[@sanchez1472]

Pedro Fuentes It continues to come in for “Low Nox efficiency”. When I perform a force regeneration the the Nox conversion is above 80%. The parameters look good but the intake pressure seems higher then usual.

[@anyimiguel]

help. ayuda . what should i do with this error .mcm reported ash mileage is lower than the cpc stored value? error code247

[@CarlosDieselElectric]

Did you get a new or different MCM? What channel? This usually happens when a computer is switched or replaced. Tell me a little more about what kind of work has been done

[@ramonolvera8325]

Muy buen video y muchas gracias por el tiempo que se toma para hacer estos videos… Donde podría conseguir el software que tiene usted a ver si me podría dar esa información porfavor ya que yo tengo el Diésel laptops pero no me funciona del todo bien se lo agradezco antemano y nuevamente muchas gracias por todo lo que hace GRACIAS!

[@CarlosDieselElectric]

El programa de Detroit lo compré en diagnosticlink.nexiq.com/ El programa es original, ay de dos niveles. Standard y Professional. Yo uso el standard.

[@ramonolvera8325]

@@CarlosDieselElectricQue tiene de diferencia el profesional y el standar

[@joseabarca302]

Una pregunta don pedro tengo un problema con un cascadia no lee los sensores del dpf ya cambie todos los sensores y el harnes y sigue como que están desconectados

[@CarlosDieselElectric]

El sistema de la caja tiene su harness y eso se conecta al harness que para la computadora ACM. Recomiendo que traten de usar una computadora (ACM) para probar.

[@albertcruz3232]

Great video, thank you! Just wondering, where can you find the parameters for a well functioning system?

[@CarlosDieselElectric]

Good question, just to clarify. By parameters you mean what is normal temperature and pressures during a regen?

[@albertcruz3232]

@@CarlosDieselElectric yes the parameters during regen, but also parameters during normal operation. Is that something you can find in a shop manual?

[@CarlosDieselElectric]

@@albertcruz3232 the only thing I can think of is the shop manual for DD-Series platform. It is a series of books that covers the engine, after treatment fault codes and more. Not sure if and how they sell it. Where are you located?

[@albertcruz3232]

@@CarlosDieselElectric thank you very much! I'm located in Los Angeles, Ca.

[@CarlosDieselElectric]

@@albertcruz3232 check with Valley Power Systems in City of Industry, CA.

[@carlosberrios1021]

How many hours to remove a 2016 DD15 one box? Can it be done in one day? I'm just curious because my truck needs a one box replacement and it only took about a day for freightliner to replace it.

[@CarlosDieselElectric]

The job can definitely be done in a day. Remove the One Box, assemble the new box, install it back into the truck and then program the MCM. So a day seems about right, depending on what was wrong with your box, they might need additional testing. But make sure get things in writing especially the warranty.

[@carlosberrios1021]

@@CarlosDieselElectric okay thanks ...yea because it was through warranty

[@CarlosDieselElectric]

@@carlosberrios1021 nice, glad the warranty covered you, because the One Boxes are expensive.

[@carlosberrios1021]

The truck was asking for regens every 500 mile or so

[@CarlosDieselElectric]

@@carlosberrios1021 that can be a sign of a bad one box, DPF’s. But getting it replaced is great especially under warranty. Also, ask about any software updates. Sometimes Detroit will release updates to the MCM, ACM and CPC. These updates help.

[@bogdanyakimiv4300]

What kind diagnostic program are you using? Thank you

[@CarlosDieselElectric]

Detroit Diesel Diagnostic Link. You can purchase it at Nexiq.

[@bogdanyakimiv4300]

@@CarlosDieselElectric Thank you

[@robertpope3619]

Just had to request a GHG14 one box. The doc face plug procedure didn't make any changes to the inlet pressure. $6K

[@CarlosDieselElectric]

Ouch. Yeah, the DOC face cleaning is kind of like a long shot. Depending on how plugged, were the DOC’s pushed forward towards the DPF?

[@robertpope3619]

@@CarlosDieselElectric no, actually they weren't.

[@CarlosDieselElectric]

@@robertpope3619 how many miles on the truck before you had to replace the One Box?

[@robertpope3619]

@@CarlosDieselElectric I believe it's 433K one box should be here at the shop this week.

[@stevereppard5593]

@@robertpope3619 you can air clean doc's if doc inlet pressure is too high to run face plugging routine. We do not replace 1 boxes for doc pressure high unless a thermal event has happened.

[@truck_diagnostic]

How do u know if the module need update ??

[@CarlosDieselElectric]

Call Freightliner (dealership, service) or call Detroit Diesel. Give them the last 6 of the VIN and ask if there any software updates available. The software update should be for the CPC, MCM and ACM.

[@HarinderSingh-ke9zn]

Where to buy this software can you help thanks

[@CarlosDieselElectric]

I purchased my software through diagnosticlink.Nexiq.com

[@joseabarca302]

Una pregunta don pedro tengo una falla en cascadia 09 no me marca la temperatura 🌡 en los sensores de dpf y ya cambie los sensores y el harnes y el problema persiste esta como si estuvieran desconectados de antemano gracias x su ayuda

[@CarlosDieselElectric]

Tienes que revisar el alambrado que regresa al MCM. Puede ser el MCM, trata de usar una computadora diferente

[@joseabarca302]

@@CarlosDieselElectric bueno don pedro lo voy aser si puede me envía su número de contacto x fa

[@CarlosDieselElectric]

@@joseabarca302 3236972425 Me puede mandar un mensaje

[@prestigeexpressllcmarissa3656]

So my one box brand new at 1.56 is no good is that what your saying

[@CarlosDieselElectric]

The DOC inlet is 1.56? Did you run a parked regen?

[@odairtaveira5675]

How did you get this DD software?

[@CarlosDieselElectric]

Odair Taveira I purchased my software through Nexiq.

[@odairtaveira5675]

It is expensive?

[@odairtaveira5675]

Does came whit cables?

[@CarlosDieselElectric]

@@odairtaveira5675 No, the adapter is seperate but does come with the cables. The software does require a subscription. In my opinion, the software is worth it and is a great investment, you will make your money back. Also, to work on these truck you will need the software, it will open many doors for you.

[@dell7054]

Ebay 70 bucks get a laptop n nexus link USB

[@jeancadet5862]

Where you located

[@CarlosDieselElectric]

We are in Montebello, Ca. 90640

[@odairtaveira5675]

Where can I subscribe the Detroit diagnostic?

[@CarlosDieselElectric]

Diagnostic link.Nexiq.com

[@odairtaveira5675]

@@CarlosDieselElectric thank you !!

[@cristoperodriguezgil8075]

Hi where can I find the right wiring harness for the one box?

[@CarlosDieselElectric]

There are a few options, it all depends on the year of your truck. There is a one piece and there is two piece sensor harness , there is harness that goes from the ACM to the One Box. Which one are you looking for?

[@cristoperodriguezgil8075]

@@CarlosDieselElectric I’m looking forward the single one it’s a 2015 Freightliner Cascadia

[@cristoperodriguezgil8075]

It’s the one where there’s a big orange circle and it stays in the one box

[@CarlosDieselElectric]

@@cristoperodriguezgil8075 sounds like the sensor harness.

[@cristoperodriguezgil8075]

@@CarlosDieselElectric yes that’s what I need but I can’t find the right one for my truck thanks for answering by the way.

[@JonJonn84]

🙏🏽🙏🏽🙏🏽🙏🏽🙏🏽🙏🏽🙏🏽🙏🏽😎

[@NotAJ-yn3xe]

What is a normal DOC inlet pressure range?

[@CarlosDieselElectric]

During a regen your DOc inlet pressure can be as high as 1.10 or lower. At the end of the parked regen it should be about 0.80 to 0.90. Anything higher than 1.2 Detroit will say the DOC is plugged.

[@NotAJ-yn3xe]

@@CarlosDieselElectric Thanks

[@ThePlatanero22]

During the process on my truck the doc inlet pressure was between .96 and 1.05 is that bad?

[@CarlosDieselElectric]

Nope. Those are good numbers. Anything over 1.20 (I believe) is more than Detroit wants.

[@prestigeexpressllcmarissa3656]

I put brand new one box and pressure is 1.56

[@jomartino1440]

That I need to change the scr box?

[@CarlosDieselElectric]

The SCR can be a problem in itself. You can have a good DOC and DPF but the SCR can ruin it

[@jomartino1440]

@@CarlosDieselElectric I took the truck to detroit they said the problem is CPC & the truck still there for 1 month because they said is back order, do you have a CPC maybe you can help me?

[@CarlosDieselElectric]

@@jomartino1440 right now there are so many issues with back order items. Even a used CPC is hard to get. I personally don’t have one. Try your local pick a part What City are you in?

[@jomartino1440]

@@CarlosDieselElectric okay I will try to find it in pickup parts , I hope can find one thanks man, Bakersfield Ca

[@reneolivares7769]

I dnt see part 2!

[@CarlosDieselElectric]

Working on it. Have to edit it. It will be up soon

[@jomartino1440]

The scr box is overheating and melt the plastic the side fairing

[@CarlosDieselElectric]

Check for exhaust leaks, that can cause the melting of the fairing. What are the temperatures ?

[@jomartino1440]

Maybe 150 degrees the scr box is very hot, I have OTR tool I do the forced regen because the truck just run 5 miles an hour

[@CarlosDieselElectric]

@@jomartino1440 try removing the side panel or side fairing and see if you can see any signs of soot or exhaust leaks. Sounds like there might be an issue there and also check the heats shielding and make sure it is secure

[@jomartino1440]

@@CarlosDieselElectric yes sir it has exhaust leaks I cleaned the DPF filter and bought a gasket and put it on and when I start the engine like is smoking steam because I clean it with waters to save money but I don’t have the computer to reset the service.

[@CarlosDieselElectric]

@@jomartino1440 that is the problem with water, much like when coolant gets into the system. With the heat, it evaporates and creates steam and will cause problems. Bake and clean of the DPF will cost you about $300 plus parts and labor.

[@jesusruiz9654]

Hello Predro, I am having regen problems with cascadia. I have fault code 3556 1 regen teperature out of range low. I ran a rwgen and the Doc onlet presssure reading 1.65 dpf oulet .48 I was told to cleand replace DPF filters and replace SCR box. Too expensive. I watched you video and wanted to ask for you help in troubleshoting. I dont want to spend a fortune in a Scr and i am new to this and dont undestand the software i have diagnosticlink pro I does not show teoublwshooting steps for this code. Your help will be appreciated much.

[@CarlosDieselElectric]

Try performing a DOC face plug cleaning routine.this may help. But let me see I can do some research tomorrow when I get in.

[@jesusruiz9654]

@@CarlosDieselElectric Thank u for the reply i will do a doc face plug cleaning. Would you recommend Scr test or just do doc cleaning for now

[@CarlosDieselElectric]

@@jesusruiz9654 let me get to work and read up on the fault code just to be sure. What other codes are you getting?

[@jesusruiz9654]

It had code 4364 18 replaced scr outlet nox sensor, ran a regeen and it went away. 3556 1 Regen temperature -out of range low is the only active code now

[@CarlosDieselElectric]

@@jesusruiz9654 This code sounds to be just temp related, so check your 7th injector (possible exhaust blockage in the S-pipe), could be the Doser Block, DOC temp sensor, check for any exhaust leaks around the One Box (V-Clamps). Now as for the pressure being a little high, a simple parked regen might be able to clear it up. If that does NOT work then possibly a DOC face plug routine may work but save that for last. Hope this helps.

[@rocanroller85]

You should just clean the pipe and fix the problem in 10 minutes. But you guys wants to screw drivers.

[@CarlosDieselElectric]

There are different ways to approach a repair. I personally don’t want to have a customer come back because I decided to cut corners. If a driver is doing the repair themselves and cleaning the pipe is the best option for themselves then go for it. I prefer to do the repairs the right way and keep the driver on the road.