CdnHO
Well-Known Member
I needed dental work after bringing mine home from the dealership.
Pressures were all over the place. All high. Pretty poor service.
Pressures were all over the place. All high. Pretty poor service.Ram Heavy Duty Forum
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Regens at alarming rate!
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The TPMS sensors that are used with STFA are excellent, and easily used as a tire pressure gauge.
I want to put the newer sensors in my hunting wheels/tires before fall to be able to use STFA on those tires too. Makes it easy to inflate/deflate when I’m doing 20 other things fueling or packing or unpacking, etc.
Update on my truck.
Truck was in the shop for around 3 weeks.
They ended up replacing the DPF.
Have been driving it around 4 times a week for the past 2 months, short trips, maybe 40-50 miles, stop and go, some idling, etc, I think they fixed it.
It now is passively regenerating even on shorter trips. I think they just unplugged something hahaha.
Hope yall get some resolution on yours soon.
Truck was in the shop for around 3 weeks.
They ended up replacing the DPF.
Have been driving it around 4 times a week for the past 2 months, short trips, maybe 40-50 miles, stop and go, some idling, etc, I think they fixed it.
It now is passively regenerating even on shorter trips. I think they just unplugged something hahaha.
Hope yall get some resolution on yours soon.
22PearlRamMegaHD
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Brother I hope so. I'm ready to get my truck back someday. 5 weeks on Friday since it went to the dealer. And they're just now about to attempt replacing the 1st part (MAF)
Hi all, first post on this forum, but not my first truck forum. This was an interesting though long thread that took me days to read through.
I have a 2021 Ram 2500 6.7 Cummins with 65,000 miles that I bought new, and am having issues with my DPF. My last miles between regens were 136 miles with long flat drives in hot S. California at hwy speeds. But some of this is my fault.
In August of 2023 I had just changed oil and filters, and bought a cheap off brand air filter made of chinesium. We were touring the West in our 5th wheel. Before this? This truck never regened while towing. But now the DPF gauge was filling up, while towing. We were just at the Continental divide in Wyoming headed to Jackson Hole, when I got the dreaded "100% full, power reduced, see the dealer" message. I was able to climb over the pass with our 13,000 lb 5th wheel, and kept driving on the downhill side of the pass. After a few miles the passive regen cleared out enough soot that the regen started back up, and after many miles the DPF cleared out. By now I had pinned this on the air filter on a hunch, stopped at the next NAPA store, bought and replaced the air filter. Within 100 miles the DPF cleared out on it's own passively and ALL of those DPF issues went away.
A year later, this last mid August, and this is for a reference point, I drove 470 miles from Libby, Mt to Olympia, Washington to fetch my cargo trailer in storage. Right off I started a regen, as normal, it ran out and for the rest of the trip at 70-75 mph the DPF kept itself at bay with some slight readings on the gauge. The next day, hooked up to a square 3000 lb trailer, at 70 mph, this finished clearing out the DPF, and it stayed at zero the rest of the trip back.
The next day I changed oil and filters, and I used a NAPA air filter. I do use Mopar fuel filters though. Ten days later, I get another "100 % full, Power Reduced, See dealer" message. It is 100 miles to the nearest dealer, and nobody in town that can do a forced regen. Damn! I talked to the service writer at the dealer in Kalispell, HE says they are back up two weeks with "Emergency issues with Cummins engines". I assumed this to be trucks needing a regen, and after reading the sad tale of the 2022 Ram CTD, I can see why now.
So I bought the SGW bypass cable, the OBDLink MX+ code reader and AlfaOBD and then was able to force a stationary regen. And I reviewed my driving habits in this tiny town, and knowing better, I was doing way to many short cold trips. We would drive to Kalispell from time to time to hit the big box stores, 90 miles away, and this would help, I thought. I had one regen on one of those trips that lasted 100 miles, not normal at all.
About 3 weeks later, we hitched up and headed to our winter home in S. California. Now usually, towing always kept the DPF cleared out. As we headed out, I had just started a regen the day before, and was confident it would quickly finish. It took 40 miles, a bit long for towing. And 100 miles later, I was shocked to see another regen running. Whoa!
It took us 5 days of driving to get through the 1450 miles, and by the 3rd day, the DPF was mostly keeping itself cleared out, the last 3 days I had no regens, but with some indication on the DPF gauge.
Where we are in S. California is 60 miles south of the Palm Springs, Ca area. My Mom lives there, so we like to hang out near her. This is flat consistent driving, with some long idles now and then and some city mixed in. And I started keeping tabs on miles two weeks ago. No dates, but I used the odometer with my wife taking notes. I also started using the OBD2 reader to watch the regen trigger % and EGT,s for sensor 2 and 3, along with miles between regens, a vague and inaccurate number.
1st interval between regens was 158 miles.
By now I had read about using only Mopar air filters. That I had good luck with a NAPA air filter the year before, was no guarantee I had the same thing. This NAPA one had the glue strips too. So I replaced that with the proper Mopar air filter from the dealer.
My regens are short and fast, the next one was only 22 miles, that part is working good.
My second interval was 254 miles, and I thought Ok, it is slowly getting better. The next regen was 26 miles.
Then I filled up with some cheap bio diesel, and my next interval was only 136 miles. No more of that!
There are no codes. The only codes I had was in August with the full DPF was the P242f code. I had a time clearing that, until I used the "DPF Replacement" setting in AlfaOBD, this resets the DPF and then I was able to clear the codes and run the parked regen.
I'm a bit frustrated with this truck. I read the MAP sensor relearn thing with great scrutiny. What kind of Stellantis mumbo jumbo is this driving at high rpm for 10 minutes, turn truck off for ten minutes, and do that 2 more times?
I might do that, but not until the weather cools down. Or just keep driving it and keep the logs going. No sense taking it to the dealer without codes, I have no realistic expectations they would do anything.
I also changed out the DPF differential sensor but that had no effect. I checked the air horn sensors, all clean, and cleaned the TMAP sensor, it had a light coating of soot, but not bad at all. Coolant is proper and full, and no soot in the tail pipe. I checked the intake piping clamps, and see nothing there. Boost seems normal.
And I'm back to that air filter and this sensor "relearn" thing.
For now, all I can do is keep track of my miles, and buy the better fuel.
Some observations of late. Running in a lower gear does nothing to help a regen. In fact, some of my highest EGT readings were sitting at a long traffic light at idle. When my truck does a parked regen with AlfaOBD, the engine runs at 1000 RPM.
Throughout all of this, my mileage has remained excellent, 21 mpg without any regens unloaded. With two regens per tank? 18 mpg. Hand calculated too. So far I have no signs of oil dilution.
I'm hoping the right air filter will clear things up, but also realize I might need to be patient, thanks to this thread.
And I am now considering a hemi 2500. With a gas engine, I don't need to worry about short trips. When I consider that I need a second vehicle to run around in, that cost would easily offset the good mileage I get with diesel. Along with no DEF and high priced filters. But that is yet to be determined, for now, I'll keep driving it. But this whole DPF saga has soured me to diesels.
I probably came close to plugging my DPF by using it as a grocery getter and dog park dad.
I sure like this truck too. And I appreciate this thread, most of these trucks are fairly bullet proof, but you got to treat them right.
PS my nick sourdo, is short for "sourdough", a term used for long time Alaska residents, I moved two years ago, 44 years was quite enough. The first winter I had the Cummins in Wasilla, Alaska, I used the high idle every time for 10 minutes, and I never saw any regens, the gauge would stay clear. A curious observation.
I have a 2021 Ram 2500 6.7 Cummins with 65,000 miles that I bought new, and am having issues with my DPF. My last miles between regens were 136 miles with long flat drives in hot S. California at hwy speeds. But some of this is my fault.
In August of 2023 I had just changed oil and filters, and bought a cheap off brand air filter made of chinesium. We were touring the West in our 5th wheel. Before this? This truck never regened while towing. But now the DPF gauge was filling up, while towing. We were just at the Continental divide in Wyoming headed to Jackson Hole, when I got the dreaded "100% full, power reduced, see the dealer" message. I was able to climb over the pass with our 13,000 lb 5th wheel, and kept driving on the downhill side of the pass. After a few miles the passive regen cleared out enough soot that the regen started back up, and after many miles the DPF cleared out. By now I had pinned this on the air filter on a hunch, stopped at the next NAPA store, bought and replaced the air filter. Within 100 miles the DPF cleared out on it's own passively and ALL of those DPF issues went away.
A year later, this last mid August, and this is for a reference point, I drove 470 miles from Libby, Mt to Olympia, Washington to fetch my cargo trailer in storage. Right off I started a regen, as normal, it ran out and for the rest of the trip at 70-75 mph the DPF kept itself at bay with some slight readings on the gauge. The next day, hooked up to a square 3000 lb trailer, at 70 mph, this finished clearing out the DPF, and it stayed at zero the rest of the trip back.
The next day I changed oil and filters, and I used a NAPA air filter. I do use Mopar fuel filters though. Ten days later, I get another "100 % full, Power Reduced, See dealer" message. It is 100 miles to the nearest dealer, and nobody in town that can do a forced regen. Damn! I talked to the service writer at the dealer in Kalispell, HE says they are back up two weeks with "Emergency issues with Cummins engines". I assumed this to be trucks needing a regen, and after reading the sad tale of the 2022 Ram CTD, I can see why now.
So I bought the SGW bypass cable, the OBDLink MX+ code reader and AlfaOBD and then was able to force a stationary regen. And I reviewed my driving habits in this tiny town, and knowing better, I was doing way to many short cold trips. We would drive to Kalispell from time to time to hit the big box stores, 90 miles away, and this would help, I thought. I had one regen on one of those trips that lasted 100 miles, not normal at all.
About 3 weeks later, we hitched up and headed to our winter home in S. California. Now usually, towing always kept the DPF cleared out. As we headed out, I had just started a regen the day before, and was confident it would quickly finish. It took 40 miles, a bit long for towing. And 100 miles later, I was shocked to see another regen running. Whoa!
It took us 5 days of driving to get through the 1450 miles, and by the 3rd day, the DPF was mostly keeping itself cleared out, the last 3 days I had no regens, but with some indication on the DPF gauge.
Where we are in S. California is 60 miles south of the Palm Springs, Ca area. My Mom lives there, so we like to hang out near her. This is flat consistent driving, with some long idles now and then and some city mixed in. And I started keeping tabs on miles two weeks ago. No dates, but I used the odometer with my wife taking notes. I also started using the OBD2 reader to watch the regen trigger % and EGT,s for sensor 2 and 3, along with miles between regens, a vague and inaccurate number.
1st interval between regens was 158 miles.
By now I had read about using only Mopar air filters. That I had good luck with a NAPA air filter the year before, was no guarantee I had the same thing. This NAPA one had the glue strips too. So I replaced that with the proper Mopar air filter from the dealer.
My regens are short and fast, the next one was only 22 miles, that part is working good.
My second interval was 254 miles, and I thought Ok, it is slowly getting better. The next regen was 26 miles.
Then I filled up with some cheap bio diesel, and my next interval was only 136 miles. No more of that!
There are no codes. The only codes I had was in August with the full DPF was the P242f code. I had a time clearing that, until I used the "DPF Replacement" setting in AlfaOBD, this resets the DPF and then I was able to clear the codes and run the parked regen.
I'm a bit frustrated with this truck. I read the MAP sensor relearn thing with great scrutiny. What kind of Stellantis mumbo jumbo is this driving at high rpm for 10 minutes, turn truck off for ten minutes, and do that 2 more times?
I might do that, but not until the weather cools down. Or just keep driving it and keep the logs going. No sense taking it to the dealer without codes, I have no realistic expectations they would do anything.
I also changed out the DPF differential sensor but that had no effect. I checked the air horn sensors, all clean, and cleaned the TMAP sensor, it had a light coating of soot, but not bad at all. Coolant is proper and full, and no soot in the tail pipe. I checked the intake piping clamps, and see nothing there. Boost seems normal.
And I'm back to that air filter and this sensor "relearn" thing.
For now, all I can do is keep track of my miles, and buy the better fuel.
Some observations of late. Running in a lower gear does nothing to help a regen. In fact, some of my highest EGT readings were sitting at a long traffic light at idle. When my truck does a parked regen with AlfaOBD, the engine runs at 1000 RPM.
Throughout all of this, my mileage has remained excellent, 21 mpg without any regens unloaded. With two regens per tank? 18 mpg. Hand calculated too. So far I have no signs of oil dilution.
I'm hoping the right air filter will clear things up, but also realize I might need to be patient, thanks to this thread.
And I am now considering a hemi 2500. With a gas engine, I don't need to worry about short trips. When I consider that I need a second vehicle to run around in, that cost would easily offset the good mileage I get with diesel. Along with no DEF and high priced filters. But that is yet to be determined, for now, I'll keep driving it. But this whole DPF saga has soured me to diesels.
I probably came close to plugging my DPF by using it as a grocery getter and dog park dad.
I sure like this truck too. And I appreciate this thread, most of these trucks are fairly bullet proof, but you got to treat them right.
PS my nick sourdo, is short for "sourdough", a term used for long time Alaska residents, I moved two years ago, 44 years was quite enough. The first winter I had the Cummins in Wasilla, Alaska, I used the high idle every time for 10 minutes, and I never saw any regens, the gauge would stay clear. A curious observation.
LegendaryLawman
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Hemis have their own set of problems. Maybe it’s time for a weight loss program on the truck.
TW720HVY
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Thank you for the additional information. You can add my 2022 to the list of trucks with this problem, 40,000 miles and it just started the frequent regen about a week or two ago and it just threw a code. I tow a lot with it, and whenever it idles I ways have the high idle on, checked the air filter and I do in fact have the one that's listed. Dealership said they have several in the shop now waiting for DPFs, which he said there are none, Ram is redesigning them.
I'd like to add my 2022 2500 truck to the list. Do you have a link for the instructions to file with NHTSA?
Had a weird regen yesterday. Went into town to get some lumber and fill up the truck, no trailer. DPF gauge was at zero. Speeds never got above 40, but it started a regen anyway. Lasted maybe 5 minutes in stop and go traffic, then went back to the DPF reading, still zero. It was at 23 hours (1272 miles), so no worries. I'd just never seen a regen at those low speeds and such a short interval.
Last edited:
H3LZSN1P3R
You're doing it wrong
DEF gauge at 0? You mean DPF gauge?
Last night my truck regened while plowing my driveway lots of shorter forward reverse moves so speed is no factor of a regen.
b1lanc
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Happens to me also when not towing or highway traveling. As long as I'm in gear with foot on the brake, I can idle in my driveway and complete the regen (boring) so I usually take a short trip on the highway to enjoy the scenery.
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Presume you mean DPF gauge…
Sounds like a 24 hour regen. I’ve done many regens where I never get above 15 mph.
The duration of the regen is based on the soot loading in the DPF. I’ve seen some pretty short 24 hour based regens.
TW720HVY
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I believe the re-gen will pause after a certain amount of time once stopped holding the brake, the other day I was in re-gen and pulled over to look at a map and after awhile it stopped. A few seconds after driving again the re-gen resumed.
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Did you put the truck in park?
I’ve only noticed regen stopping when I put the truck in park.
DougB
Well-Known Member
Sitting for long enough while in gear at idle it will stop. I just had that occur, too. It was in regen while I was running errands around town and idling a lot. It finished the regen after only 10 miles when normally it takes 18-20 when moving driving constantly.
Correct, and edited.
I thought I'd read it would only regen at highway speeds. And that had been my experience until this one.
OLEJOE
Well-Known Member
I have had the same experience. I was taking my wife to the doctor and mine went into regen shortly before getting off of the interstate. With the traffic lights and stopping to let her out, without putting the truck in park, it stopped regening and resumed when I got back to the highway and got the speed back up.
The truck is definitely doing better with the cooler temperatures. It’s coming up on its second 24 hour regen with no towing and just my regular driving regimen. The EVIC is already showing 24 hours since the last one but 23 on the ScanGauge and 95.xx%. But it has only done 1 short regen since June and it was at 20 hours and I had done an excessive amount of short trips that period. I also have 12.19% idle and 87.81% run time and that probably helps also.
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That was just timing.
They are generally more effective at highway speeds, but it’s not required.
Wholeo
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A couple of months ago I seen that the dpf read above a quarter and creeping too half. Took her out on the road and did a passive down to zero, the next day it shot to half and started a regen. Might of hit the 24 hour.
Yesterday dpf at zero, this morning almost to half so I took her out again and got it down to zero with a good road trip. I started logging the hours and it's about 13 since the last regen. Anything strange about this?
Yesterday dpf at zero, this morning almost to half so I took her out again and got it down to zero with a good road trip. I started logging the hours and it's about 13 since the last regen. Anything strange about this?
The 24 hour timed regeneration cycle does not contribute to the visible reading on the instrument cluster “DPF” gauge, so yes that sounds like odd performance of the system to me. Mine did that a few times before I started using Archoil. I also didn’t have a banks iDash at the time to monitor the DPF % REG pid to see where everything was.
Are you using the correct air filter? Mopar 53034051AB or Fleetguard AF27684 are typically the best two for consistency.
OLEJOE
Well-Known Member
Strange or not mine has done the same thing and I know it wasn’t a timed regen. DPF gauge on zero and within 10 miles gauge jumped up and went to Active regen.