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Discussion Starter · #1 ·
Good morning. Still under an extended warranty so I cannot delete yet. What kind of scan tool I can get that I can use to force a regen so I don't have to go to the dealership again if I get the exhaust filter overloaded immediate service required message.

Thanks,
 

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I done know of a tool that forces one other than the the Consult 3 that Nissan techs utilize. The ScanGauge will tell you IF your in regen or not. That’s bout all I can think of.

If your DPF clogs that easily, you have a serious issue- idles way too much, never gets ‘worked’, or only goes very short distances.

Are you insuring that the regen cycles actually complete before you shut it down?
 

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Discussion Starter · #5 ·
I done know of a tool that forces one other than the the Consult 3 that Nissan techs utilize. The ScanGauge will tell you IF your in regen or not. That’s bout all I can think of.

If your DPF clogs that easily, you have a serious issue- idles way too much, never gets ‘worked’, or only goes very short distances.

Are you insuring that the regen cycles actually complete before you shut it down?
mine is more of an extreme situation. I went on a trip from TN to PA and back towing my camper. got home and the def pump failed that day or at least I got the low def notification that day even though the tank was full. so it sat at the dealer for almost a month waiting for parts. had it back a week and was driving around town and it gave me the dpf clogged message and told me to drive the pattern to start regen and before I could do that it immediately went to service now low power mode. long story short according to the tech when the def pump failed it somehow caused the dpf to fail as well? not sure how that would be related, but once I get it back I wanted to make sure I would not get stuck like that and would be able to do my own manual regen if possible.
 

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I went through a similar problem. For starters you cannot force a regen - only a dealer / tech can do that. Second thing to consider is that the emissions warranty is only for 50 k… I had 54k on my truck when mine failed…. Had to contact consumer affairs and they did cover the new DPF, but if you get stuck paying for the repairs, deleting it is half the cost.
 

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2016 Nissan Titan XD Diesel
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28 Posts
mine is more of an extreme situation. I went on a trip from TN to PA and back towing my camper. got home and the def pump failed that day or at least I got the low def notification that day even though the tank was full. so it sat at the dealer for almost a month waiting for parts. had it back a week and was driving around town and it gave me the dpf clogged message and told me to drive the pattern to start regen and before I could do that it immediately went to service now low power mode. long story short according to the tech when the def pump failed it somehow caused the dpf to fail as well? not sure how that would be related, but once I get it back I wanted to make sure I would not get stuck like that and would be able to do my own manual regen if possible.
That sounds like either def or coolant got into your particulate filter and ruined it. I would lean more towards the def since it can crystallize. There is no solid way to manually force regen with our trucks, at least from what I have seen. I am stock too still because of the warranty. I only ever regen now at the 24 engine hour marker. That is with me using hot shots EDD in my fuel as well, it reduced my regens, along with me doing mostly highway miles.
 

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2019 Titan XD Pro4x Cummins
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Our engines naturally produce a lot of soot, especially when they're driven lightly. The ISV is a very powerful engine, far more than our trucks really need. So for most of the time, the ecm is busy trying to find ways to elevate the exhaust temperature to meet emissions, this is usually accomplished with maintaining a fairly high drive pressure ratio.

The DEF injector is after the dpf, so the failure of the def system likely triggered fallback emissions which stressed out the dpf, while also inhibiting the regen process.

Another issue is that it's possible the catalyst is too clogged to do its job. The catalyst part of the DPF lowers the combustion temperature of the raw diesel fuel in the exhaust, if it's clogged it won't get up to temperature and thus won't be able to burn off the trapped soot.

If warranty doesn't help, I'd look at buying up a used dpf from someone else who has deleted... or just throw in the towel and delete. If you're really brave, you could remove the dpf and try to clean the catalyst (the first visible part of the dpf on the inlet side). The catalyst is made with rare earth metals so try to avoid severe mechanical means of cleaning. Compressed air might get enough soot out to expose the catalyst again.
 
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