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Automatic Regen too often

My truck just finished it’s third 24 hour regeneration cycle since the weather cooled.

34.6mph average speed this cycle
849 miles
Never saw any soot reading on the dashboard DPF gauge this entire time.
This cycle had one tank dosed with AR6400D (since it was 5k miles since last treatment) and about half of the next tank with the AR6500 dosed in at 1oz per 10 gallon)

Based on my last three consecutive 24 hour regenerations:

Average mileage: 851.6mi.
Average mph: 35.33mph
Average hours: 24 engine hours

My drive cycles have remained identical
Cold weather makes all the difference.
 
DougB said:
Obviously something(s) upstream of the DPF is the issue. Frequent regen and plugged DPF are consequences.
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Yeah dealership and I think its over fueling. It would explain my vibration and intermentent knocking. They won't replace the PCM or do a new flash. RAM cut off doing diagnostics so we wait for check engine light.
 
Dinky503 said:
Yeah dealership and I think its over fueling. It would explain my vibration and intermentent knocking. They won't replace the PCM or do a new flash. RAM cut off doing diagnostics so we wait for check engine light.
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Curious what your vibration is? I'm not getting knocking, but starting to hear tapping like lifters are having issues.
 
Do y’all think it would help any if everyone with these different issues started contacting the Consumer Protection Agency ?
Clearly having to pay for an unusable product.
 
Whiskey_Tango said:
Dropped it off today. Service guy claims there are a lot of '22's with "bad" DPFs. They are supposed to call back Monday, but most likely will replace DPF.
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Talked to the dealership today. They ordered a new DPF (said they have 6 on order), but could be over a month out. Said there is a chance I can still drive it in the interim? Supposed to call me back tomorrow.
 
Small update on my truck for vibrations - I purchased new chrome hardened steel lug nuts, and switched out the stock aluminum/steel ones. Vibrations are gone... Stellantis cheaped out on something that just makes no sense to me... in case anyone wonders - I torqued the stock ones to spec before replacing them and it made no difference. I was at my wits end (3 pairs of tires, road forced balanced all of them, inspected shocks, etc), and was basically being told "it's normal"...
 
Took the truck for a drive today and thought I’d check the DPFDIS and DPFTIM pids on the iDash just to compare with my notes.

IMG_9351.jpeg
The iDash is showing my average distance between regen cycles is at 814 miles, and average time between cycles is at 1,459 minutes (24.3 engine hours.

Comparing that to my last three regen cycles recorded (all of which have been 24 hour cycles) the average mileage is slightly off (814mi on the iDash and 852 hand calculated based off my recorded information. I’m not sure how far back those average values take into account but overall it’s fairly accurate.
IMG_9353.jpeg
The truck has been performing flawlessly since October when the weather here cooled off. Amazing the difference that happens on just climatic changes alone. Not sure if that’s part of the design and it’s just the way they are, or if it’s a sign of an issue. My gut still tells me there’s something amiss with these things…
 
I had a thought, if someone is having the issue like I was where my truck is doing a regen every 200ish miles and 3-4 engine hours but not throwing the excessive regen code. Couldn’t you try putting in the wrong air filter until it throws the code? Then put the correct one back in and bring it to the dealer?

Maybe an idea for people having this issue and not wanting to take care of it themselves
 
Finn5033 said:
I had a thought, if someone is having the issue like I was where my truck is doing a regen every 200ish miles and 3-4 engine hours but not throwing the excessive regen code. Couldn’t you try putting in the wrong air filter until it throws the code? Then put the correct one back in and bring it to the dealer?

Maybe an idea for people having this issue and not wanting to take care of it themselves
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The “wrong” air filter isn’t guaranteed to drop the time between regen cycles sufficiently to where the P2459 code sets. In my truck, with the wrong air filter, I was down to a few hundred miles and several hours between regen cycles. Way more often than it needed to be, but nowhere near short enough on the intervals to create the time constraints necessary to trigger P2459
 
Finn5033 said:
I had a thought, if someone is having the issue like I was where my truck is doing a regen every 200ish miles and 3-4 engine hours but not throwing the excessive regen code. Couldn’t you try putting in the wrong air filter until it throws the code? Then put the correct one back in and bring it to the dealer?

Maybe an idea for people having this issue and not wanting to take care of it themselves
Click to expand...
Mine was doing a regen daily for a few days, maybe 30 miles between, before it threw the code.
 
andy685 said:
Here is a fun status... 22 3500 HO with the frequent Regen issue... averaging 160 miles between Regen unless towing. This is with using Archoil over the past 8 months.
Pulled a 16,000lb fifth wheel from Indiana to Florida... 1000 miles... was able to get a 24 hour Regen.
Pulled it home.... and did not add Archoil at my first filll up (about 100 miles into the trip home and was at 1/4 tank). Stopped for the night after 400 miles. Started up the next morning... pulled 15 miles and instantly went from 0 on the DPF gauge to 50% and hit a Regen. Finished within 15 minutes and stayed at 0 on the gauge the rest of the way home.

Got home... unhooked.... next day drove to work... within 10 miles went from 0 to 50% on the guage and triggered a Regen. I'm going to leave the Archoil out for the next month or so to see if I can get the MIL to come on.
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Posted the above on November 7. Over the next three weeks without Archoil, the truck regened at 40 miles, 70 and the most recent at 99 miles. The last Regen threw the P2459 code. But, I had just hooked up to my RV to head to the smokies for Thanksgiving 11/27. The truck regened normal while towing. Gone for 4 days... just got back last night. Wouldn't you know it the code turned off on its own. I'm currently sitting at 1000 miles and 23.57 hours. It might do a timed regen... but even that is iffy. On my way to work the DPF gauge went from 0 to 1/4 full in 12 miles.
My next trip with the RV isn't until the 25th of December... We will see if it retriggers the code between now and then.

OH and by the way...after we got to our campsite and unhooked the truck did great in the mountains. It would passively Regen while driving up and down the Cherokee pass in 25 degree temps.
 
andy685 said:
Posted the above on November 7. Over the next three weeks without Archoil, the truck regened at 40 miles, 70 and the most recent at 99 miles. The last Regen threw the P2459 code. But, I had just hooked up to my RV to head to the smokies for Thanksgiving 11/27. The truck regened normal while towing. Gone for 4 days... just got back last night. Wouldn't you know it the code turned off on its own. I'm currently sitting at 1000 miles and 23.57 hours. It might do a timed regen... but even that is iffy. On my way to work the DPF gauge went from 0 to 1/4 full in 12 miles.
My next trip with the RV isn't until the 25th of December... We will see if it retriggers the code between now and then.

OH and by the way...after we got to our campsite and unhooked the truck did great in the mountains. It would passively Regen while driving up and down the Cherokee pass in 25 degree temps.
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The code cleared because the average time between your regeneration cycles expanded with the towing drive cycles and the passive regeneration that comes with it. If your dashboard gauge increased 25% in 12 miles, it’s very likely whatever issue the truck had prior has returned due to the lack of higher EGT’s and passive regeneration. If the system is working as intended and the truck is operating “cleanly” there should never be a point at which the truck legitimately raises soot load that fast. I suspect your regen cycles will likely continue to move closer together and eventually trigger the code again. It would be interesting to see what your DPF % REG data was prior to finishing the towing and then compare that to where you are now. Do you have an iDash or other aftermarket monitor installed?

Also, was there a significant temperature difference between where you were towing and camping, and where you are now when “home”?
 
Picked up my truck from the dealer a week ago. They ordered a new DPF and told me I could continue to drive it. They said the DPF is over a month out.

Crazy thing is my DPF% gauge has still not moved off zero since I picked it up. I also had them do fuel filters and oil change. Not sure what else changed.
 
mbarber84 said:
The code cleared because the average time between your regeneration cycles expanded with the towing drive cycles and the passive regeneration that comes with it. If your dashboard gauge increased 25% in 12 miles, it’s very likely whatever issue the truck had prior has returned due to the lack of higher EGT’s and passive regeneration. If the system is working as intended and the truck is operating “cleanly” there should never be a point at which the truck legitimately raises soot load that fast. I suspect your regen cycles will likely continue to move closer together and eventually trigger the code again. It would be interesting to see what your DPF % REG data was prior to finishing the towing and then compare that to where you are now. Do you have an iDash or other aftermarket monitor installed?

Also, was there a significant temperature difference between where you were towing and camping, and where you are now when “home”?
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mbarber84.... I don't have an iDash... just using a odb2 dongle with OBD Fushion app.
Temps are about the same... 24 degrees in Indiana today. Elevation is obviously lower... don't know if that has any affect.
 
Whiskey_Tango said:
Picked up my truck from the dealer a week ago. They ordered a new DPF and told me I could continue to drive it. They said the DPF is over a month out.

Crazy thing is my DPF% gauge has still not moved off zero since I picked it up. I also had them do fuel filters and oil change. Not sure what else changed.
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I would still let them change it when it comes in. If they say the DPF gauge is on zero,tell them it just regened on the way over here.
 
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