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DPF GAUGE MEAINING

J

JJC72

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Does anyone know what drives the DPF gauge on a 2020? Is it a pressure differential, temperature differential, or just time/mileage? Mine just came up to @ 10 percent for the first time in 11K miles?

Does anyone know what drives the DPF gauge on a 2020? Is it a pressure differential, temperature differential, or just time/mileage? Mine just came up to @ 10 percent for the first time in 11K miles? Is there anything I should be doing to reduce it?
 
isn't it a pressure diff reading which gives the ecu an idea of how much soot is in the dpf itself.. could be wrong, won't be the 1st time this week.
 
Pretty sure it's a tank level sort of thingy, just like the one in a fuel tank.
 
yes! thought I was bloody mad.

[mod: cross-posted threads merged]
 
Last edited by a moderator:
making a circle!

[mod: cross-posted threads merged]
 
Last edited by a moderator:
There has been a glitch in the matrix.

Cross posting confuses everyone and isn't allowed for this very reason (and it's considered spammy.)

Threads have been merged.
 
I’ve been wanting to post this up. I’ve caught my 21 doing a regen 4-5 times now, and the dpf indicator has never read anything but zero. I don’t understand the whole cycle yet, but I’m wondering if the indicator is actually related to the regen cycle at all?
 
Same here. DPF reads zero, yet the truck has done quite a few regens. At least 4 in 2500 miles. What's the deal?
 
Regens turn soot into ash. That ash is stored in the DPF indefinitely until the DPF eventually needs to be cleaned manually or replaced. Perhaps the DPF gauge is reading ash accumulation or basically overall life of the DPF.
 
Rockcrawlerdude said:
Regens turn soot into ash. That ash is stored in the DPF indefinitely until the DPF eventually needs to be cleaned manually or replaced. Perhaps the DPF gauge is reading ash accumulation or basically overall life of the DPF.
Click to expand...

No, I've seen mine go up before an active regen and it always goes back to zero.

You ash accumulation comment is partly correct. Fuel soot is 100% regenerated/oxidized (no ash left). The only ash left to accumulate are materials in the fuel and exhaust that isn't fuel soot like fuel and oil additives and wear metals.

Remember also that we're doing passive regen if we're putting a load on the truck that's bringing the EGT's up high enough (+1000F) to oxidize the soot so active regen using fuel to burn it isn't needed.

Active regen should occur about once every 1K miles. Less if you're city driving, more if highway. I think the less you baby it, the less it's going to active regen.
 
Every 24hr interval of total engine run time for me, but I don’t drive in the city much and pull my camper on some pretty good hauls. I have a car for my daily driving activities so that probably helps my situation.
 
when I had the relevant items, mine would active regen all the time. towing, road tripping, getting groceries... didn't matter.
 
I am going to have to make a call to the dealershit i have 28,000km and in the year i have had the truck i have not once had the DPF gauge read anything i figured during my 0-10k km mark i would see nothing but now at almost 30k i should have seen it fluctuate at least once i keep it on that screen, keep in mind i have a lead foot except for on my way to work
 
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