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

[@zotomlinson1733]

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

[@adriangallo9574]

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

[@Thetoypoodlefamily]

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]

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]

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]

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]

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

[@TruxasSales]

Thanks 👍

[@mrjamaican5012]

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

[@fredclouse5444]

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.

[@hannahbroyles8636]

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

[@TruxasSales]

No problem 👍

[@markdavis8976]

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

[@garlandheard2073]

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

[@TruxasSales]

Sorry to hear that

[@thulean.uruk-hai]

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

[@passporttrucker9280]

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

[@TruxasSales]

Any time

[@RVSquaredSteve]

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!

[@charlieboros1894]

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

[@gh8492]

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

[@notanotherusername]

Please make more of these videos. This was great

[@TruxasSales]

Will do!

[@oraliaornelas5742]

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

[@TruxasSales]

Glad it helped

[@kdogg6406]

The last honest shop.. Great content..

[@TruxasSales]

Thank you!

[@williamstrand2508]

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

[@TolaTrucking]

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

[@MichaelJett-q9s]

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

[@lk.b3044]

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

[@angelmishi]

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]

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

[@leoalves6245]

Thank you very much for your honesty

[@TruxasSales]

Always!

[@franky7830]

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

[@bambam680]

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

[@Lacheyenona72]

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

[@EASTCAMDENRD]

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

[@acapulco1231]

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]

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

[@hollywoodsaint57]

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

[@TruxasSales]

thank you! were ready when you are

[@TruxasSales]

Make sure to check out our new video on the #2 Problem we encounter on DEF/DPF Systems below: kzbin.info/www/bejne/o5TYkqekp7agsJo Thank you, -Truxas

[@DagerlayGalahad]

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]

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

[@Amoliv501]

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

[@TruxasSales]

yes check the link in the description

[@robertvondeusche6245]

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]

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

[@nolim7056]

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

[@hotskullhead3520]

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]

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

[@gafurm1325]

HONEST MEN , RESPECT. 😊

[@raulsilva1405]

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

[@TruxasSales]

Glad I could help

[@joelcalleresjr6614]

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]

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

[@aaronmrobertsjr6873]

Blew my mind ! Very very helpful info.

[@TruxasSales]

Glad it was helpful!

[@zachwilson7034]

Great video and awesome information

[@TruxasSales]

Glad it was helpful!

[@chris76-01]

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]

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

[@greghicks7532]

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]

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]

@@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

[@dantesmontecarlos7957]

I really appreciated your video. About to hit subscribe.

[@TruxasSales]

Welcome aboard!

[@victorukap7485]

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]

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.

[@mikefrench3800]

Appreciate the good info!

[@muhammadmirza656]

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

[@TruxasSales]

Glad it was helpful!

[@thadiesel7655]

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

[@TruxasSales]

its different on Detroit's

[@truckert1819]

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

[@xrunner800]

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

[@TruxasSales]

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]

@@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]

Can you link the 30$ injector?

[@raveviews2909]

Otr performance scanner works great for me.

[@AbbasBaigaabdesigninc]

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

[@TruxasSales]

probably the sending unit

[@John-qk9hz]

QLS (Quality Level Sensor)

[@f.fernandez9421]

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]

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

[@AbdykalykKhalilov]

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

[@thereckchanic4709]

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

[@TruxasSales]

Thanks, will do!

[@bergenjohan1920]

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

[@Abe_sudays]

This video is all about def dozer, nothing about fuel

[@TruxasSales]

It injects DEF

[@eddierivera8763]

You are a hero- thank you

[@pacmante919]

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

[@femio3617]

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

[@TruxasSales]

We are in Houston TX!

[@GREATFINDS-ke5ut]

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

[@TruxasSales]

yes, we have them in stock! 832 560 1500

[@GREATFINDS-ke5ut]

@@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

[@DariusVaco405]

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

[@lk.b3044]

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

[@philobeddoe87]

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]

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.

[@EduardoGarcia-ts4sw]

Ty

[@sylvesterwatkins3312]

AWESOME VIDEO

[@TruxasSales]

Thanks!

[@TonySalas-b8b]

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

[@TruxasSales]

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

[@thomasjimenez3427]

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

[@haroldestrada2078]

Exelente video❤

[@jonhan1462]

Thank you! Just subbed!!

[@TruxasSales]

Welcome!

[@المراقبا-ك1ث]

Thank you

[@TruxasSales]

You're welcome

[@rchuso]

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

[@TruxasSales]

remove everything?

[@BBscat2020]

Thank you so much

[@TruxasSales]

You're most welcome

[@jimmyramirez5787]

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?

[@pursuit2hairhappines]

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]

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

[@ZjBx3v]

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]

we tried not to get too technical in this one

[@tridentgroupindsllc1734]

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

[@thadiesel7655]

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

[@franky7830]

Let me know if that 05 Mac is still available

[@TruxasSales]

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

[@markoflexo]

WHat is the part number for the doser?

[@TruxasSales]

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

[@bankergeorge]

I literally just order this off Amazon. Spent $1500 for diagnostics and the red light came back on 150 miles down the road. Keeping my fingers cross

[@sergioariza79]

This is great information, thanks for sharing

[@TruxasSales]

Glad it was helpful!

[@leadnsteel1428]

I has a GM diesel with the stupid def scr system. I got rid of it and went back to gas.... Will never buy a modern diesel again

[@TruxasSales]

As far as picks go Im gas only too

[@HBCUBandTalk]

Thanks!!!!

[@TruxasSales]

Your Welcome!

[@NeverMind0113]

Thank you!!! Top

[@TruxasSales]

You're welcome!

[@femio3617]

Where are you located

[@TruxasSales]

we are in Houston 832 560 1500

[@femio3617]

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

[@richhomie1971]

@@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]

@@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.

[@vikramjeetsingh4260]

Honest

[@Brandonhere1018]

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

[@TruxasSales]

Check the link we put in the description

[@esmiley3]

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.

[@eddyestrada733]

❤

[@Kevinskywest1]

Is this the fuel injector or the Def injection…

[@TruxasSales]

DEF injector

[@bryantscallorn1690]

DEF doesn’t clean the DPF. Two different systems. Close to each other but not the same

[@BBscat2020]

Can you send me your address to your shop😊

[@TruxasSales]

www.TruxasSales.com Its on the web site. Come on by!

[@markgero5645]

Cntrl/alt/DELETE