Troubleshooting: #1 Problem and Fix on DEF/DPF Systems

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In this video we tackle the #1 Problem on DEF and DPF Systems and offer some secrets and solutions on getting these problems fixed! There are many problems with these systems, but this seems to be the most common and solves the most issues. This is not a technical video explaining the intricacies of the exhaust filter system, it is explained in laymen's terms. Were down to $100 for DEF injector, plus labor, on an install at our shop in Houston
Here is a link to $67 DEF DOSER injectors + shipping,
www.haullaneparts.com/store/D...
Here is a link to $27 DEF DOSER nozzle + shipping,
www.haullaneparts.com/store/N...
visit www.truxassales.com for more information
DEF troubleshooting
DPF trouble shooting
SCR trouble shooting
SCR problems, scr fix
DOSER Injector Problems
DOSER Diesel Exhaust Fluid Injector Problems
DEF System Problems
DPF System Problems
Engine De-rated Mode
Cummins DEF Problems
Limp Home Mode
Maximum De-rate
DD15 De-rated
Repair SCR System

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Опубликовано:

18 авг 2021

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Комментарии : 158

@adriangallo9574 2 года назад

Really sad that people take advantage of others out there!! It’s good to see someone actually trying to do good honest work👍🏼

@markdavis8976 Месяц назад

Thank you!!! You are appreciated by truckers everywhere!!!

@zotomlinson1733 3 месяца назад

Respect dude I appreciate you fix it myself after Kenworth Dealership rob me. Bought Diagnostics Tool as well.

@Thetoypoodlefamily 11 месяцев назад

I’m so impressed someone came out to say the right things what should this country needs to do & what is lacking nowadays.bravo 💥👏🏼

@John-qk9hz 2 года назад

The DEF Doser does not effect the temperature during an active regeneration. It is used only to combat Nitrogen Oxide in the SCR and is mounted after the DPF Filter downstream. The truck uses the turbo actuator, 7th injector, and DOC to heat up to spec.

@TruxasSales 2 года назад

The DEF fluid does actually create heat in the SCR. The reaction that occurs and changes the gases is an "exothermic reaction" and creates heat. And if is sprays to much fluid or dribbles the fluid out it can cool the SCR and cause "ammonia slip." The SCR can also get dirty and clogged as well as the DPF filter. If the Doser is not spraying properly the system can abort the cleaning/heating. We made this video in layman terms and it isn't a video teaching about how the SCR and DPF work. "...NOx reduction with ammonia is exothermic, resulting in the release of heat." www.epa.gov/sites/default/files/2017-12/documents/scrcostmanualchapter7thedition_2016revisions2017.pdf

@gcmd5852 Год назад

The DOC creates heat to bring the SCR up to temperature then when the SCR is hot enough ( approximately 400 degrees ) the def gets injected into the SCR and turns into ammonia.

@DT-jz3wn Год назад

Outstanding video and good people. It's rare to find a shop that relies on their skills versus charging high prices. Awesome.

@TruxasSales Год назад

Thanks 👍

@mrjamaican5012 2 года назад

May god bless you and your family, the world needs more honest people like you in it

@fredclouse5444 2 года назад

I have a 2016Cascadia and had constant def issues and shop changed nox sensors and def pump dpf filters dozer valve and still kept having issues costing me thousands of dollars. Then I came across a video about the def metering valve and while it was expensive like you were saying right away on first regen I noticed the difference in regen temp in the first 5 to 10 min the codes popped back up and 5 min later were gone after cycle ran codes check again codes were cleared and gone. Freightliner kept telling me my one box needed replaced. Saving me from a ten thousand dollar job.

@charlieboros1894 2 года назад

i think you guys are fantastic..being honest is unheard of anymore..great video ty

@hannahbroyles8636 Год назад

Thanks for the video and the honesty. Not to many shops out there like you anymore.

@TruxasSales Год назад

No problem 👍

@thulean.uruk-hai 2 года назад

I suspected the doser was my primary issue, after watching this I'm convinced.

@notanotherusername 2 года назад

Please make more of these videos. This was great

@TruxasSales 2 года назад

Will do!

@passporttrucker9280 2 года назад

If I'm in Houston with truck problems I will stop by. Thanks for the good info.

@TruxasSales 2 года назад

Any time

@RVSquaredSteve Год назад

Great info...and a real shocker that these dosers should be replaced every year! I've got DEF crystals hanging down and am sure this is the problem since it's never been changed on a 2015 with 74k miles!

@oraliaornelas5742 2 года назад

Thank you very informative. Had to do this on one of our freightliner’s. It cost like 400.00. Definitely getting it online.

@TruxasSales Год назад

Glad it helped

@TolaTrucking 2 года назад

I don't have these problems because I don't have them but watched anyway and these were good advices.

@thereckchanic4709 2 года назад

Great video, keep it coming. Love the great information. Thanks

@TruxasSales 2 года назад

Thanks, will do!

@gh8492 Год назад

Yes sir, you law out the truth about the criminal mechanic fair and square..thanks for the knowledge.

@angelmishi 2 года назад

I really appreciate your honesty! Thank you so much for being so honest in this fake world! Do you all have any new tricks for sale? I would love to buy one from you guys because of your honesty!

@TruxasSales Год назад

We have some new ones coming in January!! call us up.

@aaronmrobertsjr6873 2 года назад

Blew my mind ! Very very helpful info.

@TruxasSales 2 года назад

Glad it was helpful!

@mikefrench3800 Год назад

Appreciate the good info!

@hollywoodsaint57 2 года назад

I subbed for honesty!!!! I will buy my 1st truck from you guys

@TruxasSales 2 года назад

thank you! were ready when you are

@kdogg6406 2 года назад

The last honest shop.. Great content..

@TruxasSales 2 года назад

Thank you!

@williamstrand2508 2 года назад

Got hooked cost me over $1,000 plus seven nights in a hotel and it's something that simple thank you for your input

@truckert1819 Год назад

Love the video thanks for being 1of the nice guy's

@leoalves6245 11 месяцев назад

Thank you very much for your honesty

@TruxasSales 10 месяцев назад

Always!

@user-xi1ud1sx5q 9 месяцев назад

I realy appreciate your video new OO here from 11 yrs company driver an feel like I just begain lol.

@raulsilva1405 2 года назад

You saved me a lot of money, thanks for the video.

@TruxasSales 2 года назад

Glad I could help

@eddierivera8763 2 года назад

You are a hero- thank you

@garlandheard2073 6 месяцев назад

GOOD STUFF MAN I'M CURRENTLY STUCK IN ARIZONA IN LIMP MODE.

@TruxasSales 6 месяцев назад

Sorry to hear that

@muhammadmirza656 2 года назад

Thanks a lot i watched your this video twicely.A lot of good informations i have in this video. thans

@TruxasSales Год назад

Glad it was helpful!

@franky7830 5 месяцев назад

I like these people so much. It makes me want to buy a truck from them

@zachwilson7034 2 месяца назад

Great video and awesome information

@TruxasSales Месяц назад

Glad it was helpful!

@nolim7056 Год назад

Thanks for the video and advice. I believe I’m having this issue. Can someone help with a part number for a 2020 T680 MX13? Dozer injector. Thanks

@jonhan1462 2 года назад

Thank you! Just subbed!!

@TruxasSales 2 года назад

Welcome!

@dantesmontecarlos7957 6 месяцев назад

I really appreciated your video. About to hit subscribe.

@TruxasSales 6 месяцев назад

Welcome aboard!

@EduardoGarcia-ts4sw 2 года назад

@sylvesterwatkins3312 2 года назад

AWESOME VIDEO

@TruxasSales Год назад

Thanks!

@lk.b3044 2 года назад

I got stock in GA for same problem because pdf I wash I watch ur video aweeks earily Cost me over $3.000 I been waiting 3 days for what just that sensor

@sergioariza79 2 года назад

This is great information, thanks for sharing

@TruxasSales 2 года назад

Glad it was helpful!

@EASTCAMDENRD 2 года назад

This video, just explained to me how much I got ripped off 🏆

@vkbj2015 2 года назад

Thank you!!! Top

@TruxasSales 2 года назад

You're welcome!

@BBscat2020 Год назад

Thank you so much

@TruxasSales Год назад

You're most welcome

@bambam680 Год назад

the scr system is after the dpf. that injector is the def injector. not the aftertreatment injector

@HBCUBandTalk 2 года назад

Thanks!!!!

@TruxasSales 2 года назад

Your Welcome!

@Lacheyenona72 Год назад

Another big problem with DEF systems is the level sensor it’ll throw the truck in derate and keep throwing codes!! if it does just keep the def tank full

@chris76-01 2 года назад

I currently have codes spn 3226,5298 and 4796 on a 2018 peterbilt 579. Still runs like normal, but tired of seeing that engine malfunction light on all the time. Any advice?

@TruxasSales Год назад

have the air intake egr and sensors cleaned, that needs to be done every other year really

@raveviews2909 Год назад

Otr performance scanner works great for me.

@greghicks7532 2 года назад

After installation of the valve do I have to reset computer or is just plug and play..I thought about mine but didn't want to tamper with it because I was afraid it would mess up computer readings

@TruxasSales 2 года назад

If there is no engine light on and you replace the senor, everything will be fine, but if the light is on, replacing the sensor will not clear it.

@greghicks7532 2 года назад

@@TruxasSales appreciate the response..about to purchase a diagnostic scan tool for that ..looking at the bocsh hds 250..is that OK..what do you recommend

@f.fernandez9421 2 года назад

I need some help with my 2014 D13 i've been having problem with getting the temperature higher than 240 on T! and 230 on T2 while doing regen. i change 7 injector which was not clog but i change, i change the AHI , i change the SCR injector dozer valve. No luck there is no code that i can look for it. any suggestion i will appreciate.I also did the reseting and nothing the truck went into derate 5 mile and doesn't want to let go. and when i mean is not hot is that i can put my hand and leave it touching the piece where is mounted the dozer valve and it wont burn.

@TruxasSales Год назад

Once it is in derate you have to take it to a place with a computer that can clear the code. without seeing it there are a lot of possibilities

@user-qg1vr7yx6e 10 месяцев назад

Hello, I got the same as in the video and these codes Aftertreatment system operator inducement severity message error Aftertreatment system - DEF dosing malfunction detected Emission control system - Engine torque derate active Emission control system - Vehicle speed limitation active Lookup Code / FMI Count 524619 P1514 P1518 P1514 I changed the DPF level sensor, the filter and doser changed the sensor but it’s still on

@DagerlayGalahad 2 года назад

So I have a kenworth 2016 with a pack car motor T680 Just had the whole DPF system replaced replaced filters everything sensors and guess what now my truck is having A problem again I paid thousands of dollars to have that system replace and and apparently it's doing the same issue as before they said they had to replace the filters because they were cracked or had a hole in them or something I or something I did not know you could damage them when you're pulling them out that's funny probably what happened but if you could do a video about the suit level centers it'd be much appreciated if there's something about maybe needing cleaned is what somebody told me

@TruxasSales 2 года назад

We have a inlet outlet nox sensor video on the list!

@user-oc8jf4ng2y 6 месяцев назад

Thank you

@TruxasSales 6 месяцев назад

You're welcome

@thadiesel7655 2 года назад

Thanks for the info. I got code acm 520372 16 in the dash. Do you think a new doser injector will fix it?

@acapulco1231 Год назад

Hello TRUXAS. I have a KW T680 2019. In about 2 months it's the 3 time I am in the shop for a DPF Faulty Code in my dashboard. It seems to be always a sensor or something regarding the DPF system. I really like my truck bought it new... I need to learn more how to fix and clear codes on this system. Do you offer like a guide of parts to replace before they go bad and how to video also ?. PLEASE HELP . I have been an O.Optr. Since 1990. Real truck driver... but DPF is killing my vocation....

@TruxasSales Год назад

we plan to do a emissions sytem maintenace video in the future

@DariusVaco405 Год назад

All I can find is isx Cummins ones for sale around that price what about mx13?

@robertvondeusche6245 2 года назад

Pulled into shipper at the guard gate and the Limp Mode Maximum De-rate must replace def fluid . Is this critical ? Can I drive out of here ? I just lease purchased a truck through a company haven’t even had the truck 2 weeks. .

@TruxasSales Год назад

you can't get out of limp mode unless you go to a dealer. maximum derate is 5mph.

@victorukap7485 5 месяцев назад

I have a 2013 kenworh t800 cummins isx 485. I saw this message from my dashboard that "Regen is inhibited due to switch". My boost on the guage registers 20. But the exhaust pipe is extremely hot such that when I placed my finger to it, it burnt my skin. It has not gotten to a derate mode yet. Do you think replacing the doser injector will take care of the regeneration? Please advise

@TruxasSales 5 месяцев назад

sounds like your reganeration swith is in manuel mode. if your truck has that you can swith it to auto. if you havent replaced your doser injecter in the last few years you should do it.

@hotskullhead3520 2 года назад

Can u delete the DEF SYSTEM? And what happens to the truck I had heard the truck runs better stronger and more fuel mileage. By cutting it off/out is this true? Thank Russ From Detroit MICH

@TruxasSales Год назад

We can't delete it. but OfCourse the engine is going to run way better and longer without that system.

@Amoliv501 Год назад

Do you have that part for paccar 2016 peterbilt 579 !?

@TruxasSales Год назад

yes check the link in the description

@AbbasBaigaabdesigninc 2 года назад

My DEF gauge is stuck on E. Sensor replacement needed? 2018 Tiffin Phaeton 40ih

@TruxasSales 2 года назад

probably the sending unit

@John-qk9hz 2 года назад

QLS (Quality Level Sensor)

@jimmyramirez5787 Год назад

ok i wasn't the only one that caught that lol, this DEF injector wont even Start spray innless the system is at 500degrees caused by doc and fuel dozer, did something change?

@joelcalleresjr6614 10 месяцев назад

When these systems started coming out they said to clean your filters every 500k miles. Now the brought it down to 100k to 150k 😂😂 most of them are easy fixes like my man here said. Thanks

@michaelshafer4546 6 месяцев назад

Put it in a garbage can filled with water and liquid plumber gel max keep moving it around wear rubber gloves and keep dumping the water in and out until it's shiny like new wash the drain slash acid off good so it dont keep eating the metal...ps shines all metal to new

@xrunner800 2 года назад

So where do I get the $10 injector? Could you do a video of how to just swap that out real quick?

@TruxasSales 2 года назад

eBay, but you may have to wait 2 months to get them at that price, we have them right now for $30. I'll see about the video. it's pretty easy to change but if you don't do it right the dowser doesn't work property and you have to take it all apart again and you may have engine codes that need to be cleared. sometimes the extra money for the whole dowser is worth the less potential headaches.

@xrunner800 2 года назад

@@TruxasSales I was also thinking it would be better not to deal with the coolant lines. I did order the complete valve from Amazon 2 days ago.

@patrickgarrett9866 Год назад

Can you link the 30$ injector?

@thadiesel7655 2 года назад

Is the part for the cummins isx doser the same one the detroit uses?

@TruxasSales Год назад

its different on Detroit's

@GREATFINDS-ke5ut 2 года назад

Do you happen to have in stock a Quality DEF sensor ?

@TruxasSales 2 года назад

yes, we have them in stock! 832 560 1500

@GREATFINDS-ke5ut 2 года назад

@@TruxasSales what is the price I'm here stuck in Caldwell ID now and are they Paccar or aftermarket. I really appreciate your quick response.I might need one but I do would you guys overnight or two days delivery for me I will pay for it. I call you tomorrow ounce the technician tell me if it's what I need. Thank You in advance

@philobeddoe87 5 месяцев назад

My 2015 paccar goes into limp mode every time I turn it on due to SCR fault code. I can clear it to drive but it appears the doser isn't getting def. Just got it out of the shop a couple weeks ago for a different dpf issue. I replaced the doser and it didn't do the trick. Could it be the pump?

@TruxasSales 5 месяцев назад

yes it could be the pump. or the filer in the def tank is dirty. If it has the orginal 2015 def filter its long over due to replace it.

@pursuit2hairhappines Год назад

I have a 2014 Jeep Grand Cherokee with Diesel engine. I'm receiving a Engine will not restart in 150 miles Service Def message. Def fluid has been added and the message still appears. Could this be the issue. The message appeared before and the dealer had the truck for 3months to no avail.

@TruxasSales Год назад

dont know anything about jeep diesel, but if it has def, then it has a def injector.

@femio3617 2 года назад

Am having this issue right now am in pecos tx dont think I will make it to Fort Worth tx

@TruxasSales 2 года назад

We are in Houston TX!

@rchuso 2 года назад

Yea, but how do I remove the entire system and go back to higher NO levels?

@TruxasSales Год назад

remove everything?

@user-si6df8fk5l 2 месяца назад

Do you know if this is for any truck? i have a kenworth t680 2017 whit paccar engine

@TruxasSales 2 месяца назад

yes, most trucks, 11-17 have that doser, but there are others.

@eddyestrada733 Год назад

❤

@pacmante919 2 года назад

Def is a scam 3 of our company trucks have this issue oldest truck has 210000

@bergenjohan1920 Год назад

So that dozer you're talking about that injects diesel or DEF fluid?

@Abe_sudays Год назад

This video is all about def dozer, nothing about fuel

@TruxasSales Год назад

It injects DEF

@thomasjimenez3427 8 месяцев назад

To bad you ain’t in California that’s exactly the problem With my truck but my truck smokes a lil

@franky7830 5 месяцев назад

Let me know if that 05 Mac is still available

@TruxasSales 5 месяцев назад

you can see all the used macks on are web site www.TruxasSales.com we have some pre emmission ones on there!

@markoflexo 2 года назад

WHat is the part number for the doser?

@TruxasSales Год назад

please check the link we posted in the description for the part number

@vikramjeetsingh4260 21 день назад

Honest

@tridentgroupindsllc1734 Год назад

Thank you soooo much bro! If I were a girl I'd marry you 😄! Saved me tons thanks man!

@ZjBx3v 2 года назад

You should call video dosage valve replqce, because i didn't see any dosage valve spray test or eats system diagnostics (nothing) :) but otherwise good vid :)

@TruxasSales 2 года назад

we tried not to get too technical in this one

@TruxasSales 5 месяцев назад

Make sure to check out our new video on the #2 Problem we encounter on DEF/DPF Systems below: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-mcuatnrQmz8.html Thank you, -Truxas

@lk.b3044 2 года назад

Dealership most dishonest with drivers just wanna 💰 money take from drivers and not doing there job taking too slow

@Brandonhere1018 2 года назад

Do you happen to have the part number or the eBay link ?

@TruxasSales 2 года назад

Check the link we put in the description

@esmiley3 2 года назад

I contacted Kenworth and got the part number. I just received the dossier valve that I purchased on eBay, yep they have them all day. It was $32.49! The gasket was $48. I am going to install it tomorrow morning. Wish me luck! Also, you can find Nox Sensors, for around $150.

@saythatshitinmyface Год назад

Why are you saying dosher injector ?

@TruxasSales Год назад

We put a link in the description!

@femio3617 2 года назад

Where are you located

@TruxasSales 2 года назад

we are in Houston 832 560 1500

@femio3617 2 года назад

@@TruxasSales am in Fort Worth any closer place you can recommend

@richhomie1971 2 года назад

@@TruxasSales might have to come check you guys out I’m getting engine derate it said “Def pressure sensor” also it says “Aft 1 SCR DOSING REAGENT”

@clytnjms 2 года назад

@@femio3617 You honestly think after sharing all this free content and taking time out his day for free to answer questions and post videos that'd he take more time to answer this question? Some people just take take take.