Volvo P0401 EGR insufficient flow

[@periscope1368]

Thank you Sir. I’ve done cleaning that sensor, but the part that really made me crazy is that yellow clip’s. I couldn’t click it back after finishing the job, broke it down and had to use zip-tie to make sure connector won’t disconnect. I hate Volvo and their Swedish complications when it comes to clips or coolant hoses connectors under the truck. Easy stuff unnecessarily over complicated.

[@nealk6387]

I work for a volvo construction equipment dealer and we see this a lot. I bought a set of torch cleaners and wire pipe cleaners for this exact purpose. You will also see lost power and not have any dtcs active when the soot clogs the orifices. Good video!

[@navaro20]

i have thia code After cleaning how to erase that check engine fault?

[@strubies]

Loss of power from a clogged sensor? How is that?

[@ralphborroel5684]

@@navaro20 , Do a Regen, then drive truck normally until the temps get back to required parameters. Then do a ECU Reset, by turning key to On position not starting the truck then OFF. Do this 3 times, then start the 4th ON position. This should clear the code. If it doesn't clear up you need to use the Computer Software for your Engine to "Clear All Codes."

[@beatsanz]

Great explanation! Keep these videos coming! Thanx

[@TATEXPRESSINC]

Awesome Video!🎥

[@robertotoledo1910]

Well unbelievable but true on my 2018 Volvo I’ve been experiencing this situation for a while, I just recently purchased my first diagnostic computer and I am glad because I don’t like the periodic check in your lights coming on and not being able to do anything about it, interestingly enough I ran a diagnostic on the engine and it came back with what I believe it should be the same as what you’re describing, it came back with the (engine exhaust gas recircutation 1 valve flow insufficient detected, i’m wondering if this is the same symptom although mine does not look dirty on the outside but I’m fixing to follow the same procedure that you demonstrated, your feedback on this is appreciated and I want to thank you very much,

[@aldomolina8633]

You mentioned coolant possibly leaking to the sensor. How would that happen? And how can I check? I have the same code and lost engine power. I smell coolant but no visible leak. Thanks

[@alreyindustries]

At about 50 seconds into the video I point at the EGR cooler. It is the long silver rectangular box with the orange rubber hose on the front of it. That is like a radiator of sorts and it is meant to cool the exhaust gases that are recirculating back to the intake. It uses coolant to do that and sometimes they leak internally. If you pull that orange hose of the front of it and shine a light in there you should be able to see if it is wet or not. It should not be wet or smell of coolant. If it is wet or smells like coolant inside that EGR cooler, it is most likely leaking and needs to be replaced.

[@c.a.mcneil7599]

Thank you for the pearl. A little air cleans it up...

[@catskinner7564]

I appreciate your video I'm working on a Mac I got that same problem I'm going to take apart and clean it see what happens

[@dguido1000]

Adam Domino hello did this solve your problem

[@catskinner7564]

The doser valve was sticking I think I said it already I clean the out of the whole tire line

[@catskinner7564]

Super easy to do I recommend it every hundred fifty thousand

[@alimalimov1849]

Does this problem make a semi truck derate?

[@Muriuki218]

Did cleaning the sensor connectors here work?

[@slickRG_17]

Would a bad connection cause the code to be off and on? It stays for a while then gone then will pop again.....no certain time just random....

[@adokarajic7464]

Having same issue… any update?

[@7thfloorisnomoreq790]

How do you tell if it's coolant? You taste it that's how

[@KalchykDen]

Most of them time it’s not delta p, it’s egr valve itself. It’s a common problem in Volvo. I’m on my 3rd egr valve, it only lasts me 100k miles

[@40johny]

Great video, THX

[@DanielGarcia-mq1to]

Hi there. Could the same thing happene to a 2006 Volvo vnl with a VeD12 engine ? Sometimes i smell coolant but there's no noticeable leak. Now i do hear a hissing sound like coming from the egr and the turbo area everytime it does it it blows smoke. What could that be ? Thanks

[@jasonlightbearer335]

Did you ever find out issue? I’m having same issues

[@aldomolina8633]

I have a very similar issue. Did you find the problem and solution?

[@navaro20]

i have thia code After cleaning how to erase that check engine fault?

[@strubies]

I had the same code, dealer said egr valve is stuck closed. Is that effect similar to when people block off the egr to bypass the recirculation process, or would a stuck closed egr lead to loss of power? I did clean the diff pressure sensor as you showed

[@ralphborroel5684]

watch this video. Shows how the egr Actuator gets stuck and has to be replaced: kzbin.info/www/bejne/q326n36hfZqSfJI

[@Coronado-nz7wu]

Thanks for the video. Would electrical contact cleaner be ok to use or would it be too harsh?

[@alreyindustries]

Coronado 5150 probably a bit late now, but I’m assuming if it’s not corrosive and you dry it out it would be alright 🤷🏻‍♂️. Not entirely sure.

[@Coronado-nz7wu]

@@alreyindustries Thanks!

[@ralphborroel5684]

@@Coronado-nz7wu , Don't Use electrical contact cleaner. It leaves a film coating of gunk. Just use air and a soft rag to the outer shell, then dab a little Conductive Grease with your finger to the connections.

[@alloverflorida5886]

You can clean out those ports with a zip ties inserted into a drill

[@singhbola1942]

My truck derate then take to dealer they replace def dozer and now truck burn too much def fluid and took truck back to same dealer then they say need new egr cooler so with new egr cooler same problem now they say need turbo. Code on dash p04d900/p040100/ p240f00 . Any help thanks

[@thermroberts380]

You need to stay away from that dealer. Sounds like they just throwing parts at your expense..

[@singhbola1942]

@ what should I try next

[@amandaandgabriel5950]

Can I clean the sensor ports with carb cleaner?

[@alreyindustries]

@@amandaandgabriel5950 it’s probably not recommended by the manufacturer, BUT as long as you make sure it is dry before putting it back together you should be ok. The two ports at the bottom of the sensor are sensitive to pressure so be aware of that.

[@amandaandgabriel5950]

​@@alreyindustries I got code p040313 and my vovlo is a 2017 630 with a d13. Does this video refer to that code? Also I really appreciate the help. I'm a new owner operator and any way I can save money and fix it my self will definitely help.

[@alreyindustries]

@ from what I saw online (I don’t have the software anymore), it looks like this code is referring to an open circuit at the EGR valve. Check the wiring at the EGR valve connector and harness. And if you know how, check the voltage and ohms at the connector of the EGR valve.

[@amandaandgabriel5950]

@alreyindustries okay I'll check this weekend. I'll have a little down time. Also I'm gonna clean the sensor you was referring to n in this video. I'll keep you updated. Thanks for everything

[@victorv4946]

I remove the sensor and i found clean water inside..what Ken be the problem??thanks

[@alreyindustries]

If you found water in the ports of the actual sensor where it reads the exhaust pressure, that is usually normal. There is often times condensation that builds up on those sensor ports because of the change in temperature and humidity. If you found water in the electrical connector you have other issues. I wouldn’t worry too much about water in the sensor ports, but make sure the ports in the pipe where the sensor mounts are not plugged and that the sensor is reading pressures correctly.

[@victorv4946]

@@alreyindustries thanks

[@johnysilver1853]

What is the part number for d13 engine?

[@vitalekg]

What's the name of the software?

[@alreyindustries]

Premium tech tool

[@klumaverik]

Let's define Normal. 😅