Volvo vnl def pump wiring rubbing, preventive maintenance save from derate

this is a short on the go video that i wanted to make for a long time, but didn't have a good example,
if it was hard to hear i was trying to explain that wiring going from def pump to after-treatment module they rub against each other or on the bracket, it takes a little bit of time but closer to 400000 miles will come up with a def pump or acm codes, very common but not always or will just derate, what i have been doing is insulating the wiring in that area with some sort of rubber, hose or soft plastic, because once insulation is damaged, green corrosion starts to build up in the wiring, then hopefully you can see it to fix it.
Before you securing the wiring back make sure to inspect the loom and wiring insulation if there is any wire you can see need it insulate it from weather

[@lokio9913]

You're a freaking genius, i finally found the issue thanks to you, I kept getting the acm fault with no code. And they told me it was the battery terminals, the battery cable, the wiring harness. And i moved that wire and fault code came off. The acm cable was rubbed on the other wire exactly like in you're video.

[@volvobigtrucks8640]

Thanks for the feedback. I'm glad I could help you with this headache.

[@TLoGreen26]

You just had to move the wire and the fault went away? Didn’t have to repair the worn wire??

[@lokio9913]

@@TLoGreen26 it came back i replaced the cable. Went away for a bit fault code and check engine light came back after a week.

[@terryj-londonontariocanada4605]

Awesome video, my 2015 Volvo is right around 450,000 miles, I’ll be doing your suggested preventative fix this weekend! Thanks.

[@volvobigtrucks8640]

Before you secure it back make sure to inspect the loom and wiring insulation if there is any wire showing, need it insulate it from weather

[@damianm7925]

Thank you very much this video is awesome. That's really helpful information!!! I'm going to check this out over the weekend. Thank you one more time.

[@jacobavraam7309]

Man dealers will hate you..hahahha Good information for owners operator

[@nationwide9403]

Better do that simple fix then pay dealer $$$$ for nothing. I'm personally check that wire for any damage.

[@ChooseLanes]

after watching this im now realising i havnt been hearing that sound of the def pump retuning def fluid like i used to

[@wendyking9759]

Thank you so very much for this. Having low scr warning, debate warning and spn 5394. Fmi 17

[@razaghumman2412]

Thanku again for another very informative vid

[@nationwide9403]

Good information, will change a wire to DEF.

[@valeriurusu9678]

Thanks for the good advice !!!

[@luceromundo5614]

Love the video and will be doing this on my truck. But one issue I’m having now is, i did a service after being on the road 2 weeks. Changed oil an filters, fuel filter and fuel water separator.after all was done, i tried starting the truck but was running as if it was starving for fuel. After several attempts i noticed black smoke coming from the firewall.i took off the passenger side panel off and noticed the dpf was clogged. The mechanic took it off and and it cleaned along with the doc. But the issue I’m getting is a fault code of “neutral secured not detected.” Vehicle in neutral and won’t start.fuses and relays are good. Also there is no audible sound of fuel pump either. Been days and been pulling our heads off with this. Doing diagnostics, no code faults were coming up at all. Not sure if the ecm is shot.any ideas off the top of ur heard ?

[@saga2760]

Thanks for the video. I’m having low def pressure code and truck going at 5mph. Can you please let me know where the fuses are located? I did found the ones you mentioned on top of batteries a 10amp was blown. Thank you.

[@davidsallas7049]

Thank you for the video

[@rolandoperez6144]

Thanks brother

[@smokeu600]

Thank you

[@eugeniujosanu279]

Thanks .. sucks I didn t see this video before . Already spend 950 for one broken wire . Now have same issue .. but I don t think my pump is pushing def in the doser injector , and also getting acm fault plus aftertreatment code (just like before ) . Time to see harness and the pump for humming noise

[@eking5781]

Thanks

[@EdgarMartinez-gr5si]

Thanks, Is my Volvo is 2013 when I turn it off I do not hear the DEF pump vacuuming back should I be concerned or you do not have dtcs

[@pep5772]

Do you know what does Temp System Lockout Active mean? What causes it? How to fix it?

[@kis717]

Thanks for the info. My DEF temperature sensor came up. Do you know where is it located?

[@drey-4893]

its all apart of the def level sensor

[@kis717]

@@drey-4893 makes sense, Thank You

[@kamranmamadaliev9176]

Can this cause fault code Sa 17 dtc p065800

[@AUSMONGU]

very good., The other thing is, if you know, issues, about the def heater control valve, shortage, thank you/.

[@f.fernandez6960]

Auserto did you fix you problem with DEF heater tank ?

[@Armannortheast]

What was the code number

[@oleg182002]

I have a poor def quality engine will derate msg come up every other day or so, lights up for 10 minutes then goes away. I’ve checked def quality, def pump / pressure, no signs, regenerates good and all. Could it be a def sender unit or one of the nox sensors going bad?

[@volvobigtrucks8640]

Mostly it's the def quality sensor. Inside the def tank. Nox sensors would give you more codes

[@nationwide9403]

@@volvobigtrucks8640 Where it's located on the DEF thank?

[@aunimni]

@@nationwide9403 is inside the tank all the way at bottom

[@Coronado-nz7wu]

$1049 repair two moths ago for same wire rubbed through.

[@aunimni]

I used to hear my pump running after I shut off the tractor now I can't. In this video you said something about the fuse by the battery and inside the cabin. Can you be more specific and try to help me with this. I have code spn4376 fmi5,7 no pump running after shot off engine.

[@f.fernandez6960]

Hello Lukac did you get to fix the problem with the pump not running after shutting truck off. If did let me know I have the same problem with another truck of mine. If not i ll keep you posted if i fine the problem on mine truck.

[@f.fernandez6960]

Thats's the return line not returning DEF to tank.

[@aunimni]

@@f.fernandez6960 ?

[@f.fernandez6960]

@@aunimni what I mean is the issued with the DEF pump running after you shut the engine .

[@aunimni]

@@f.fernandez6960 I changed the line from DeF pump to DEF tank ... Still same issue. Maybe something wrong with my deff tank

[@mauriciochavez1695]

My def pump dont start on i put new pump still problem i check the power ground but the dozer valve i dont see nothigh no Power

[@joelayne80]

Mauricio, did you ever get your pump running again if so what was the problem if you don't mind me asking, sounds like ew have the same problems??

[@aunimni]

Same problem here, did you fix this

[@joelayne80]

@@aunimni Hey I had same problem, replaced the wire harness and pump works now, I had a wire that was rubbed raw on passenger side def wiring

[@f.fernandez6960]

@@aunimni Hey Lukac did you get to fix your truck DEF pump, if you did wat was the problem. cause i have same problem i change the pump still not working.

[@aunimni]

@@f.fernandez6960 No not yet still have same issue for the past 2 years. I still have check engine light with the code SPN 4376 fmi 5. I am using very little Deff fluid and parking Regan it come up every 6.000 to 10.000 miles. I change pump once but with after market that i got online. It was doing same thing. No luck so far and i stop worrying about. Let me know here if you got any more questions. Good luck.