Timeline:
August 25: DPF% was full so I enabled Auto Regen and drove until the regen was complete. I turned Auto Regen back off after it completed.
August 26: Hooked up my camper & drove 700 miles. Auto Regen still turned off. DPF% was back up to 5% when I pulled out of the campground, but that soon dropped back to 0% and then stayed there for the rest of the trip. (Passive Regen)
August 27: Arrived home at 4 AM. DPF was still at 0% Auto Regen was still turned off.
September 3: Happened to scroll by the DPF% and noticed it was still at 0%... Auto Regen still turned off.

I found this odd that after a full week later, the truck still showed the DPF was still at 0%. At this point I had drove a little over 100 miles since getting back home, with much of it in town, stop and go at red lights, so I figured it should be up to at least 10 - 15%. I rechecked that Auto Regen was turned off, and it was, so I turned it back on... just to see what would happen. I immediately noticed that my iDash showed the Regen status as "ON/ACTIVE" so I took off for a drive. The truck was at 0% the entire time, however, the iDash showed the truck was in Regen for about 15 minutes, which is the normal time for an active regen to complete. After it completed, I turned Auto Regen back off and finished driving until the EGT temps came back down.

(And I believe that the reason the truck immediately went into an active regen was because these trucks are programmed to regen at every 500 miles, regardless of percentage. By this time I had driven just over 800 miles since the truck completed it's last active regen, so when I turned it back on, the truck said "Hey, it's time!")

September 6: 3 days after the regen, the DPF% was still at 0%. Auto Regen was still turned off. I had driven about another 50 miles since September 3, and I kept an eye on the EGT temps since September 1 and they have been normal operating temps, so no passive regen possible.

It's worth noting that when I picked my truck up September 24, 2021 it did not come with the factory optioned OCR. I added that myself via Forscan about a week later. I have made no changes to it since and it has been working as expected. But, I did just go out and used Forscan to disable the DPF% screen and then re-enabled it. I checked to make sure the DPF% screen had disappeared from the trucks menu, and now it is back, but it still reads 0%. It's also worth noting that since installing my iDash, the trucks DPF% has not matched the iDash reading at all. I actually removed the DPF RG on my iDash about a week ago since I could never count on it.

So, I'm not really sure what's going on. The truck doesn't seem to be having any sort of issues. I did look for any DTC's when I used Forscan earlier to reset the DPF% screen and I did find one in the ACM. It was "B1A06 - Speaker 6." I believe this was just a code from when I unplugged either the tweeter in the A Pillar when hooking up my Dash Cam, or the center speaker when removing the center tray a few days ago to install the Built Right Dash Mount. I cleared it with Forscan and checked for codes again and it didn't come back up. I don't believe that this code is connected to the DPF though.

Also, I did bring the truck back to the dealership on September 1 for the windshield wiper arm recall. However, they never hooked it to a computer. They were only in the truck long enough to pull it closer to their service doors to do the inspection.

So, why would the truck not show an increase in the DPF%? Maybe I just need to give it more time... I dunno, but based on past experiences, by this time/miles the DPF% would have already started climbing again. And since I enabled the OCR myself, I can't really take it and ask the dealership to look into it. Besides, until something actually happened, I wouldn't expect them to actually do anything anyway.

 

nothing was wrong with it. been my expeirience in the past that sometimes it just takes a little longer to build some soot and other times it builds right away.

 

I hope that’s all it is.

 

Sounds like a good problem to have….

but…if you want some scary internet arm chair opinions….your cp4 is going to blow up…you have less silver in the fuel you are using than the rest of us…..are you using kerosene as fuel by any chance?

 

LOL… I was thinking more along the lines of the DPF sensor acting up… but now that you mention it I think you’re right… it’s gotta be the CP4!

But, I have been using B20 since that seems to be what’s everywhere I stop and then use the Better Diesel FBC and Hot Shots EDT in each tank. Been using this for a while now.

 

great.

b20 burns excellent.

i have to drive 30 minutes to get b5.

 

I agree with Scott, I don't think there is anything wrong with it. I have the same features enabled through Forscan but have never looked at the DPF% that soon after completing a regen...Ill have to do so. I am currently sitting around 2300 miles since my last regen as we have been making a few trips camping with the 5er this summer so its getting cleaned passively.

 

So, to keep from derailing the other thread, I wanted to post more info here.

I'm still stuck at 0%. Tailpipe is clean. No codes on the truck, and none when using Forscan or my iDash to scan for them. If you can believe the DEF gauge, there has been no drastic change in its usage. EGT's are all within normal temp range when driving. Fuel usage has not decreased.

I really hope I am just being paranoid, and this isn't something that's building up to something bigger.... but this just doesn't seem right to me.

At this point, I am around 120 or 130 miles since my last regen.

I just went for a 35ish mile drive. The trucks DPF status stayed at 0% the entire time. I was driving slow with some stop and go, and then about 20 miles of 2 lane highway at 56 mph, then about 10 miles of backroads on the way back home. And despite that I have never trusted the "DPF SL" PID on the iDash, I added it back before I left. When I cranked the truck it briefly said 7%, but then fell back to 6%. As I drove those slow 35 or so miles, with EGT's in high 400's and EGT 1 occasionally up to around 525, I watched the DPF SL on the iDash fall down to 2%.

When I got back home I grabbed my computer and hooked the truck to Forscan. According to Forscan, my "DPF System Percentage of the Maximum Soot Loading - Inferred Closed Loop, %" is 2.00 The "Mass of Soot Trapped in the Exhaust Diesel Particulate Filter Closed Loop Calculation" is 0.23. It seems that Forscan agrees with the iDash DPF SL, and being that it is 2%, it may be too low for the truck to move from 0...

I agree... this seems perfect! My truck seems to be going into a passive regen every time I crank it regardless of how it's used. It isn't using any extra fuel or DEF or throwing codes... Nothing sounds funny, the truck doesn't run any different, it's great in fact, the pipes are clean, no smoke... nothing glaringly wrong.

But it still doesn't seem right to me. I'm getting paranoid and anticipating something to come. Why is it being so "perfect" all of a sudden? Is the Better Diesel FBC that I have been using along with the Hot Shots EDT all of a sudden making the fuel burn perfectly clean? Or is a sensor acting up somewhere and it's just not being read accurately?

Over the last 13000 miles, it has never taken more than a few miles after a regen to move from 0% to 5%. And yes, I do watch mine. I will actually keep my Auto Regen turned off and watch my DPF% climb. Once it's around 90% I start planning a long drive so I can turn it back on, let it actively regen back down to 0%, and then turn it back off and start over.

So how long do I wait to figure out my next step? What if the DPF% doesn't change for a month? Do I still just be happy about it? I do have a 800-ish mile trip coming up in a few weeks that we will be towing our camper, so I know that when that happens, it will definitely drop back to 0% (if it isn't still there) and stay there while towing...

I'm at a loss... I want to be excited, but I can't be...


Photo of the DPF status in Forscan.

Also to add, I added the Manifold Absolute Pressure and the Exhaust Back Pressure PID to my iDash. From what I have read they should be similar?


Engine idling.

 

With mixed driving and unloaded, my truck takes about 200 miles or so to go from zero to 5% DPF load.
Give you system some more time to show a change.

 

I know others have reported the same, so it’s good to hear others reporting something similar! What worries me is that for the life of this truck it has never taken more than about 15-20 miles to move from 0, and sometimes less than 10. Now all of a sudden I am around 150 miles and it hasn’t budged. The sudden, drastic change has just got me nervous a little.

 

Maybe the prolonged passive regen left your filter cleaner than normal.

 

I figure there will be a few “I told you so’s”… and I’m fine with that. My DPF climbed to 5% this morning! That’s sure does make me feel better. It’s still strange to me that it took this long but at least it’s moving again!


Now I’m thinking about tackling the S&S DPK this weekend!

 

Nice, how many miles before it finally climbed? Must be good fuel

 

Good luck with the install.... maybe you'll inspire me to get off my **** and do it myself instead of paying a buddy to do it to do get it done...

Hey for schitts and giggles, I'll just throw this out there. I use these on my oil filter. I have plans to buy an industrial one for my oil bypass filter. Overkill...

And while I realize aluminum is not magnetic, it may pick up very small metallic particles in the fuel since you using the 2.1 version with the spin on filter. I've been using them since they first came out.

FilterMag Consumer Products | Engine Protection Since 1999



My son's 15 Ford Fusion.

 

@q5 dave I was right around 165 miles since the last regen. I am still baffled why it took so long, but I was so excited when I got in the truck this morning and noticed it! Now that I know it isn't stuck I will likely go ahead and install the S&S DPK this weekend!

@Overkill2 That filter mag is pretty cool! I gotta cool it a little on my spending right now, but it's on my list now! LOL. I guess I could get 2 and put one on my oil filter and one on the DPK's fuel filter!