DD15 fault code SPN 3246 FMI 0 DPF Outlet Temperature Very High
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- เผยแพร่เมื่อ 6 ส.ค. 2024
- In this video, customer said the CHECK ENGINE LIGHT, MALFUNCTION LIGHT AND THE STOP ENGINE LIGHT came on when trying to do a parked regen.
Once I connected to the truck using my DDDL software I was able to see fault code SPN 3246 FMI 0 which is DPF Outlet Temperature Very High.
It is important to try and duplicate the problem first before removing the DPF filters and sending them out for service.
Once the parked regen was started, within 10 minutes the DPF outlet temp went above 1200 degrees (1248) and the STOP ENGINE LIGHT was illuminated. This is a protection feature to protect and prevent and damage to the One Box or to the truck.
I also performed a ISB test to see if any of the injectors could be causing the issue, valve adjustment was performed back in October of 2020 (around 40,000 miles ago).
Replacement of the DPF Outlet temp sensor was done, also checked the Diesel Doser Injector (doser valve). This is also important to check in case it is getting stuck in the open position, since the doser injector or doser valve did get stuck once shop air was blown into it. I used a test doser injector to perform the next step and that is to perform a parked regen in order to verify repairs. Normal regen time is approximately 30-40 minutes depending on how clean or dirty the after treatment maybe.
After approximately 30 minutes the parked regen was successful, the DOC inlet, DOC outlet and the DPF outlet temperatures were GOOD. The fault did NOT return and the truck was ready to be released.
There are a few things that can cause this fault code, dirty DPF filters, plugged DOC or DPF filters, over fueling injectors, a bad Diesel Doser Block to name a few. - ยานยนต์และพาหนะ
PEDRO very cool videos bro Please as soon as you can make a video changing the def filters glans & all that kind the stuff BLESSING you good on your profession
Not very many videos on this on youtube thanks for the upload.
You are welcome. Hope it helps.
VERY GOOD
GRACIAAS YOUR VIDEOS HELP ME A LOT
❤
Thank you very much
Awesome 👍🏻👍🏻
Mr Fuentes your videos are in a class all by its self very informative im grateful to have found your channel . that said what causes a up n down slight surging at idle on a dd15 freightliner cascadia ive been told by some shops it could be this could be that . i have no codes just a slight surging up down up down it drives you nuts. if you can reply i would really appreciate your help
Surging at idle sounds like it could be the quantity control valve. What else is it doing?
Thank you for replying, I'm going to have the control valve checked , is this a serviceable part or replace only ? It doesn't throw a code for it , the only code I've gotten recently was spn 1077 fmi 14 it come on and then goes out won't come back for months then it does and goes away so I don't think its anything serious. Again thank you sir for your info . 👍
@@porttrucker I recommend to find a shop with asome DD15 experience. The control valve is $650-700, it is located on the backside of the hi pressure fuel pump.
Let me check out the other code and see what it says.
@@CarlosDieselElectric thank you sir I will look into getting a good shop with honest people it's difficult to find thats why guys like yourself are so helpful and knowledgeable about your craft. I can see you do what you do from the heart
Thanks again for reaching out 👍
Love your videos thanks
Quick about the one box how common do you see it replaced at 700,000 miles I have over 900,000 on mine to be honest had very little problems out of it replaced doser valve, both nox sensor, def injector pump, cleaned the filters. Actually getting ready to clean shortly again. Just curious if I should start looking for new box or wait for sings of failure.?
It should only be an area of concern if NOx efficiency fault codes become more frequent. But it sounds like your truck is running great. I say you are doing things right. Glad to hear you are at 900,000 miles.
Thanks!
Do you think that NOX efficiency should perform above 90% if we know that in Regen process Fuel Doser Injector pouring diesel straight in to DEF filters. Thanks.
What is the normal range for the dpf outlet pressure to run at and when should it be a concern. Mine is running at 1.7 psi and the doc inlet pressure is around 1.1 psi. Thanks
I need this guys assistance bad!!!
Thanku sir how to program it abs
All dialer can't find the problem...we have check engine light on diagnostics how spn 1569 fmi31 and spn3246 fmi15 Peterbilt dealer changed temperature 🌡️ sensor out .... 💯 Miles and check engine light back to .
.I don't know what to do next?what parts we are needed?if you know something Please....Help.Thanks
Love the information thank you.
If u dont mind I have a question.
My Mil light is on and I am trying to diagnose it. I have cleaned dpf filters and replaced both nox sensors in the recent past.
Any ideas on how track and fix mil light issues?
Also will bad one box temp/pressure sensors trigger Mil light?
Thanks in advance.
What fault code or codes are you getting?
I am currently get no codes on my dash.
@@ranbirsohal8886 have someone plug and see what the MCM or ACM is reading. The code may not be active but there is definitely something there. Or maybe just a simple clear
I had someone clear it for me when I replaced the noxs last month and the light came back after 150 miles. I will try to find someone with scanner.
@@ranbirsohal8886update please?
Detroit Diesel in Rockford IL replaced my DEF pump about 7 weeks ago. Got about another 10k miles on it since and now has total engine shutdown on I-40 in Arkansas. Pulled off, checked codes and got the exact code you titled the video. Anyway was able to start the truck and drive another ten miles to a safer spot. No derate at all, but continuous beeping and dashboard reads “shutdown in process” the whole time… any thoughts?
I'm having same problem
Did u find out the cause
@@supplyunlimited1360 I’m very sorry I don’t remember that far back what it was
Which freightliner analyzer would you suggest I buy for my use so many out there
If you are working on Detroit engines, then go with the original program. Detroit Diesel Diagnostic Link. It works on Series 60 12.7L, 14L, MBE, DD engines, emissions and also the DT12 transmissions.
In my opinion, that would be the best option.
Pedro I have this exact issue :( do you guys work outside of the shop my truck is located in rancho Dominguez or do you know someone you recommend?
I don’t do road service. I like to do all my work at my shop because I have access to all my equipment once I need to start checking things or taking things apart
Hi .I have same problem with our box truck 🚛 freightliner 2012 m2
SCR outlet Nox Sensor
What ppm value is a good value?
Typically the Inlet will have a higher number for example 350 ppm and your outlet will have a lower number like 40 ppm.
The further the numbers the higher the NOx efficiency will be.
Quick question, why did you replace the temperature sensor? Was it not reading at all?
The sensor could be faulty, this can cause the temp sensor to read higher than it should. My approach is "LOW HANGING FRUIT". I like to typically start with the smaller or less expensive options first. If that does not work, then I proceed with removal and cleaning of the DPF filters. This is the one option I like to try after I have tried sensors. Typically cleaning filters, parts, labor and testing will cost around $1100 or more. So you can see this is why I like to save this for later.
If the sensor is original and has never been changed then a sensor is the quickest option and cheapest.
I have the same thing but I changed all the outlet temp sensors but while driving randomly get the same code??? Please help
Could be DOC or DPF related. What are your pressures?
@@CarlosDieselElectric yes it was the dosser
Saludos maestro Pedro una pregunta estoy buscando una computadora para diagnóstico no sabe de una
El programa se compra directamente de Nexiq. La computadora se puede comprar en Best Buy o Amazon. El programa tiene su requisito de lo que tiene que tener la computadora.
Could the dozer valve stuck open cause high output temp even with new sensor??
Yes, the diesel Doser valve can be stuck open also, look at your diesel Doser block.
Sure was fixed the problem thanks.
I have a same issue where are your shop located if you don’t mind.
Our shop is in Montebello, Ca. 90640
Where is your location
Great video thank you. Can you tell me the average temp during a regen.
DOC inlet will always be lower than the DOC Outlet and DPF.
What year is the truck?
@@CarlosDieselElectric 2016 frieghtliner cascadia. DD 13
@@user-lj7gn9fv3c during a regen for GHG14
DOC inlet 700-800
DOC outlet 900-1050 average
DPF outlet 900-1050 average. The DPF will usually mirror the DOC outlet.
@@CarlosDieselElectric thank you for the response and it was super fast at that. I just subscribed. Thank you
Me puedes dar el link dodnde enseñas a aser 4 hours regen por favor?
Busca ACTIONS, después AFTERTREATMENT, y después DOC Face Cleaning.
La regeneración se va durar 4.5 horas.
The SCR conversion rate of my car started at 80%, then gradually decreased, and finally the conversion efficiency was low and stopped smoking. What is the reason, brother
How many miles? What year?
Where is your location please
We are in Montebello, Ca. 90640