- Messages
- 5,185
- Reaction score
- 5,383
- Points
- 113
I was referring to where you said burning DEF.
You appear to be only having 24 hour regens.
Ram Heavy Duty Forum
Register a free account today to become a member! Once signed in, you'll be able to participate on this site by adding your own topics and posts, as well as connect with other members through your own private inbox!
Regeneration Frequency Issue: MAF Poll
- Thread starter mbarber84
- Start date
I was referring to where you said burning DEF.
You appear to be only having 24 hour regens.
OLEJOE
Well-Known Member
Your drive cycle is what keeps your DPF clean. You should get many trouble free miles with that type driving.
My drive cycle is not nearly as good as yours but I have gotten the 24 hour time based regens for the last 4 regens. I did tow my TT for 50 miles on the last one.
oledirteh
Well-Known Member
Yesterday i hit the 24 hour mark, went into regen for 12 miles then ended. Went from 20.5 mpg to 19.1 during the process. Before the 24 hour hit my dpf gauge read about 15% or so, but its back to 0. ill be putting another 1000 miles on the truck this week, so see how it goes
This regen hit at the 1200 mile mark.
gimmie11s
Well-Known Member
- Messages
- 2,677
- Reaction score
- 3,973
- Points
- 113
With 87k miles, id imagine you don't have any regen issues if you've not yet noticed anything out of the ordinary.
Yesterday i hit the 24 hour mark, went into regen for 12 miles then ended. Went from 20.5 mpg to 19.1 during the process. Before the 24 hour hit my dpf gauge read about 15% or so, but its back to 0. ill be putting another 1000 miles on the truck this week, so see how it goes
Mine does the same. Ive only once seen the "keep driving" message in 3 years of owning my truck. Ive caught it actively regenning once on the way to work on the highway. My commute is 23 miles one way and the process was done long before I arrived at work.
OLEJOE
Well-Known Member
Good to know not everyone is having issues. The more miles put on them each drive seems to be the ticket.
Our truck is a 2022 3500 SO with just over 11,400 miles (bought new 1 year ago). Over 7000 miles has been towing our fifth wheel. I'm using DEF at a 3.02% rate (just throwing it out there, even though it has nothing to do with regen).
Contacted our dealer and ended up dropping the truck off yesterday. The truck has gone into regen 4 times in 5 weeks. I've learned a lot from reading this forum, and watching some experts on YT. The dealer's tech checked everything on the checklist that is seen on either page 1 or 2 of this thread. His report stated the air filter was new, and is fine (note: I replaced the air filter with one from AutoZone, and it's an STP; so that may be the issue). He also noted that the MAF sensor is the German one (I have the photos), and that Engineering recommends the Chinese part; so it will be replaced under warranty.
As a side note, the very 1st active regen occurred following a 3000 mile road trip, almost all of which was towing, including lots of mountains. The active regen occurred 2 weeks after our return. Unfortunately, I didn't know enough to track things like engine hours and DPF %. I will going forward though.
Contacted our dealer and ended up dropping the truck off yesterday. The truck has gone into regen 4 times in 5 weeks. I've learned a lot from reading this forum, and watching some experts on YT. The dealer's tech checked everything on the checklist that is seen on either page 1 or 2 of this thread. His report stated the air filter was new, and is fine (note: I replaced the air filter with one from AutoZone, and it's an STP; so that may be the issue). He also noted that the MAF sensor is the German one (I have the photos), and that Engineering recommends the Chinese part; so it will be replaced under warranty.
As a side note, the very 1st active regen occurred following a 3000 mile road trip, almost all of which was towing, including lots of mountains. The active regen occurred 2 weeks after our return. Unfortunately, I didn't know enough to track things like engine hours and DPF %. I will going forward though.
Riddick
Well-Known Member
These trucks are extremely sensitive to air filters. I would start by swapping in a Mopar or Fleetguard filter and reevaluate.
Engine hours are displayed on the EVIC.
I’m positive you had an active regen somewhere probably smack dab in the middle of that 3000miles pulling that camper, it runs on a 24hr clock and unless you have other issues it should not have been soot based. I usually keep the DPF gauge up on the Evic so I know when it’s in regen and track it using one of the trip meters.
More than one likely.
Right, I just hadn't tracked the info. Thanks
I have a Mopar filter on order from Geno's. Thanks
Anyone know what the warranty is on the DPF? Some places say 3yr/36k, some say 5yr/50k (Federal Emissions Warranty) and some say 8yr/80k (Federal Emissions Warranty). My 2022 RAM 3500 goes into passive Regen every 75-150 miles. I leave the DPF gauge up so I know when it goes into passive Regen every time and always let the cycle complete every single time so I've never had the P2459 code but I'm sick of it. I have used Archoil at every fill up since new, change the engine air filter (no glue strips) every 6 months, and had the correct MAF sensor installed. I'm at 38K miles and because of the TSB may just stop paying attention to the passive regens, let the DPF fail, get the P2459/CEL and have the DPF replaced but want to make sure it's covered.
I’ve wondered the same if anyone knows for sure. Here’s the ChatGPT response:
For a Ram 2500 with a diesel engine, the Diesel Particulate Filter (DPF) falls under the Federal Emissions Warranty, which typically covers emissions-related components for 8 years or 80,000 miles, whichever comes first.
However, some states with California emissions standards (e.g., CA, NY, MA) may have extended coverage under their specific emissions regulations. You can verify your exact warranty details in your Ram warranty booklet or by checking with a dealership.
My understanding is that there are two types of regen. The "active" regen is when the center display says "exhaust regen in progress, continue driving" and the "passive" regen is supposed to take place every 24-25 hours of drive time and unless you're watching the DPF gauge you're not notified it's happening. Because most guys don't watch that gauge the cycle doesn't always complete, the DPF clogs and fails and the CEL comes on, throwing the P2459 regen frequency code.
That's what I found too and online it says the DPF is covered by that warranty. I'll call RAM to try to get confirmation tomorrow.
DougB
Well-Known Member
Depends on your state. I'm in TX and have a 2022. 5yr/50k federal diesel emissions warranty.
For CARB states it's 5yr/50k or 7yr/70k depending on the part. DOC/DPF is listed under both sections it is covered for 7/70k
2022 CARB diesel emissions warranty - https://vehicleinfo.mopar.com/asset.../2500/P132159_22_DJD2_D_CEW_EN_US_DIGITAL.pdf
- Messages
- 5,185
- Reaction score
- 5,383
- Points
- 113
While there are two types of regen, active and passive, that’s not the difference of the two.
Active regen is anytime the truck is actively heating the DPF to clean it. This occurs either every 24 hours of engine run time or when the soot level gets to ~45% on the dash gauge, whichever happens first. Regardless of what triggers the active regen the DPF page tells you a regen is in progress. The 24 hour clock resets at the completion of every active regen.
Passive regen is anytime the DPF is hot enough from the driving conditions to clean itself, this can be continuous or not at all. There are no indications of this (aside from maybe a reduced DPF gauge) and no additional fuel is injected, it’s 100% passive.
When the dash tells you to continue driving you have had failed regen attempts and/or an issue that’s preventing active regen from properly cleaning the DPF. It’s not normal to see the continue driving message.
Not watching the gauge is not why people get the P2459.