Regens at alarming rate!

[jasmith348]

Thanks for the explanation. And I won’t be holding my breath on it being fixed properly. I’ll have to look at the paperwork when I pick up the truck and see exactly what they did. When the service rep texted me, he told me they were replacing the DPF converter. When I asked him to clarify, he said he meant the catalytic converter. So I’m not sure he really knows what exactly the diesel tech was replacing.

My dealer replaced my catalytic converter as well. Did not fix the issue or really improve it at all honestly.

I'm still waiting to get my truck back with the new injectors. Dealership has 3 of them and hopefully the other 3 come in today. Already had to cancel part of our camping trip as the truck was supposed to be fixed a week ago.

 

[Firebird]

Just did a hard regen today, sucker took about 45 miles at 72 mph to complete

 

[BLUERIVERHAULER]

I am having same issues . I pull Rv’s from Indiana to dealers. Alway loaded one way and unloaded back. All highway miles. No regeneration while loaded . Regen’s about ever 40 to 100 miles unloaded. It regens so often that it melts my rear rock flap. Have taken to dealer several times. They say it’s fixed and it regens before I get home. I am about 45 miles from dealership. Not only does the attempted fixes cost money but down time cost more. I started process of ordering new truck but now rethinking that. These trucks cost a lot of money. They should be fixable. I hope someone finds a fix and they come back and post it.

 

[BLUERIVERHAULER]

Well took it in to dealer. Tech said he had it fixed but didn’t get 10 miles miles away before it regens. Just came up to Indiana to get trailer and it regenerates every 40 miles off interstate and every 100 miles on interstate. No regens while loaded. Engine light on now since so many regens. Going to dealer up here tomorrow. there is a lot of trucks pulling rvs in norther Indiana. hoping tech up here will know how to solve problem and not just replace parts.

 

[jasmith348]

Well took it in to dealer. Tech said he had it fixed but didn’t get 10 miles miles away before it regens. Just came up to Indiana to get trailer and it regenerates every 40 miles off interstate and every 100 miles on interstate. No regens while loaded. Engine light on now since so many regens. Going to dealer up here tomorrow. there is a lot of trucks pulling rvs in norther Indiana. hoping tech up here will know how to solve problem and not just replace parts.

Man, I think you might the first on the message board here that regualry works the truck hard and is having this issue.

 

[OLEJOE]

I’m wondering if it could be an ECM issue. If they have checked all of the sensors and the DPF and the exhaust pipe for overly rich or oil or coolant and that’s good then the ECM is all it can be.

 

[BLUERIVERHAULER]

Another dealer bites the dust. On my way back to Missouri . Regened 40 miles out from dealer again another 40 miles out and every 100 once on I70. I am getting case number from ram cares.

 

[Chris400]

They changed my DPF earlier this year, still does regens every few hundred miles. I have most of them logged; everytime I notice a change in the filter percentage i catch the milage and the new level.

Update dealership gave me a courtesy warranty and replaced the DPF 56400 miles originally gave me a cost of $4000 to replace $705 at pickup still don’t trust the truck !

 

[OLEJOE]

Update dealership gave me a courtesy warranty and replaced the DPF 56400 miles originally gave me a cost of $4000 to replace $705 at pickup still don’t trust the truck !

Did they say that the DPF was actually stopped up or did they change it to try to stop it from regening so often? If it was in fact stopped up then they need to find out what is causing it or why the regens it does are not purging it like it is supposed to. I know I got down on mine hard at low rpm and the transmission didn’t downshift and got out of it before the turbo caught up and it regened with in 200 miles. Is there a sensor that controls the fuel output relative to the turbo boost?

 

[PRS]

Did they say that the DPF was actually stopped up or did they change it to try to stop it from regening so often? If it was in fact stopped up then they need to find out what is causing it or why the regens it does are not purging it like it is supposed to. I know I got down on mine hard at low rpm and the transmission didn’t downshift and got out of it before the turbo caught up and it regened with in 200 miles. Is there a sensor that controls the fuel output relative to the turbo boost?

Yes, it’s called the PCM. Sorry, couldn’t resist.

 

[OLEJOE]

Yes, it’s called the PCM. Sorry, couldn’t resist.

Ha Ha

 

[ShowKiller1]

Driving around town today with the cruise set at 65 and the check engine light comes on, the truck was running fine. Just got it home and checked the codes with AlfaOBD. Throwing P203F and P2459. Cleared the codes and let it idle for a bit. They did not return. Truck details below:

2022 2500 Lonestar
5912 miles
7/8 tank of DEF
3/4 tank of fuel on a 50 gallon tank
Still on the original factory installed air filter.

If it pops up again i will take it in. They need to do the Y43 recall anyways and my newly replaced radio has started acting up again.

 

[Emptycreel]

@RamCares I hope all is well with the team.

I own a 2022 3500 6.7 CC SB picked it up last Dec 4. Amazing ride, comfortable, quiet, and decent fuel milage, believe it or not 24 mpg for a trip from Va to Fl and back to Va.....other shoe drops. Three weeks ago, my DPF climbed rapidly 0% to approximate 32% in a day. The next day July 2nd it went to approximately 45% and then the regen started, within minutes the DPF showed 100%, CEL, reduced power, see dealer. So within one hour I am at the dealer. Can't help you need appointment. Scheduled appointment for July 8 @ 0900. At appointment, mileage 12,255 when checked for appointment, diesel tech takes truck, does a computer reset/forced regen to see if it would clear the CEL (3 codes were showing, don't recall what they were). An approximate 45 minute forced regen was done, no codes, no CEL...cool. Tech takes truck for a drive (about 25 miles round trip), when he gets back truck is doing an auto regen...second regen now in three hours. I drive home truck finishes regen during drive. July 12, auto regen. July 16 auto regen, July 21 (TODAY mileage 12, 693) auto regen. My DPF goes from reading 0% to 45% approximately in less than 50 miles before every regen. Dealer says there are no TSB's, recalls, notices, holy F's, or anything. Five regens, including the manual at the dealer in less than 500 miles. I believe it is a bad sensor. Dealer noted that there was a similar issue with the ECO Diesel, and it was resolved. BTW, mine was the first 22 at this particular dealer for this issue, they had seen it in older units.

Any info besides...there is nothing, will be accepted.

Thanks for your time.
Randy
3C63R3EL5NG121141

Randy - I now have he same problem with a 2021 Ram 2500 6.7 liter Cummins with 35,000 miles. The only real difference between my story and yours is that the diesel particulate filter screen has only ever suggested 0% full. Went to the dealer today and, because of a recent regen, there were no error codes when I went in. The frequent regens together with the alarming message "Exhaust Filter Full; Reduced Power; See Dealer" was not enough to get my tech's attention past his conclusion that "it seems to have sorted itself out." Did you ever get a fix? Greg

 

[mbarber84]

So here’s a good example. Just documented my most recent regeneration. Gauge hit the 50% full trigger and the cycle started at 11:03am on the interstate running 70-75mph consistently. This was a soot load commanded cycle. Allowed the truck to continue the cycle and maintained speed. Finished at 11:26am. So 23 minutes start to finish. Gauge reading 0% upon completion. Drove a few more minutes on the interstate and reached my work, parked the truck. Got back in it to drive home. At about 3:48pm I glanced down at the gauge and it was reading half way between empty and the 25% full mark. Happened to note the mileage at that moment. A total of exactly 40 miles had been clocked between when the last regen cycle finished, and when the 12.5% reading was noted. 100% of that 40 miles was highway driving at 70 mph. That cannot be correct. There is no way the truck generated that much slot in 40 miles running the interstate at speed.

 

[steve49]

My truck has always done the passive regens and then a full active regen at the 24 hours driving time right on time. However, over the last 2-3 weeks the last two full active regens have been way early for whatever reason. I haven't changed my driving habits locally, get fuel from the same station, wasn't towing, using the Mopar AB air filter and had 488 miles since the last active regen. I've done two oil changes so far Rotella T6 5W-40, with the dealer giving me the AA air filter when I did the first change but switched to the AB on second change. I've gone almost 8000 miles since the second oil change. Last Friday at 15-hours it was showing 99%, dropped to 81% and then quickly back to 99%, and went into full regen. It completed showing approximately 42% on my ScanGauge II, but next day's startup it was showing 28%, and then jumps up to the 40% range when driving. Next days starting shows lower but each day's startup it gradually goes up. The previous regen I believe went full active around the 13 hours mark on the 24-hour clock. I'm guessing maybe a sensor is going bad, we'll see what the next full regen does.

 

[BLUERIVERHAULER]

Another dealer bites the dust. On my way back to Missouri . Regened 40 miles out from dealer again another 40 miles out and every 100 once on I70. I am getting case number from ram cares.

Back to dealer again . I am not gettng over 50 miles to the regen. This is going to be my last try, then trading it. This will be 4th ram truck and 2 jeeps. Thinking about a ford f450. No more Mopar products for me.

 

[HighlandRidge]

Theoretically you shouldn’t have to watch it. The system should run itself and if there’s an issue, it should generate a code.

That being said, I think it’s important to monitor the gauge to see and understand how your drive cycles have an effect on the number of regeneration cycles your truck uses.

During active regeneration, the engine fuel injectors are commanded to inject diesel fuel in to the cylinders during the exhaust stroke. That fuel is sent downstream to the DOC and DPF and is used to artificially increase the temperature in the DPF above the threshold where soot will be combusted. (Roughly 1,000-1,200°F). Since you have no control over when these active regens start, it’s helpful to try and time them to when your drive cycle will allow the most ideal operational conditions for maximum regenerative effect.

An active regen cycle that is run while doing stop and go, or low speed / low rpm / low load duty cycles is less effective, and can also lead to increased fuel dilution in your engine oil since the fuel is sprayed into the cylinders. (Some of that fuel makes it into the engine oil, especially if the truck is running low rpm). There’s also a chance that the cycle will not fully complete, thus not completely removing the soot in the DPF. If this continues to happen, the soot-loading in the DPF will continue. When it reaches 80%, you’ll get a pop-up warning and a chime, telling you the regen needs to happen and you need to keep driving.

If your truck does a lot of low speed / low load work, you’ll end up running more regeneration cycles, which leads to more fuel in the oil. If this is the case, you really should be cutting your service intervals down.

Watching the gauges helps to better understand what your truck does, and how you can match your operation and maintenance procedures to best maintain the truck.

My truck just started a regen process at the most inopportune time.

I had a low fuel (49 miles) warning light on and needed to go only a few miles to an appointment a couple miles up the road when the "regeneration in process" message popped up. I didn't know if I should let the truck idle while at my appointment or what? I decided to shut it down due to low fuel and unknown time frame. After my appointment, I had to return a couple miles back to the warehouse and I noticed the fuel consumption was quickly going down to only 21 miles to empty! (WTF?)

I didn't understand what was going on. After clocking out, I was able to get some fuel a few miles away but still not sure the best recourse for this process to play out.

So, thank you very much for the explanation - looks like I need to hit the highway for a short road trip to allow this process to play out.

 

[mbarber84]

My truck just started a regen process at the most inopportune time.

I had a low fuel (49 miles) warning light on and needed to go only a few miles to an appointment a couple miles up the road when the "regeneration in process" message popped up. I didn't know if I should let the truck idle while at my appointment or what? I decided to shut it down due to low fuel and unknown time frame. After my appointment, I had to return a couple miles back to the warehouse and I noticed the fuel consumption was quickly going down to only 21 miles to empty! (WTF?)

I didn't understand what was going on. After clocking out, I was able to get some fuel a few miles away but still not sure the best recourse for this process to play out.

So, thank you very much for the explanation - looks like I need to hit the highway for a short road trip to allow this process to play out.

Yeah you burn a fair amount of fuel to generate and maintain all that heat in the DPF. Definitely kills your fuel efficiency numbers.

 

[flan]

My truck just started a regen process at the most inopportune time.

I had a low fuel (49 miles) warning light on and needed to go only a few miles to an appointment a couple miles up the road when the "regeneration in process" message popped up. I didn't know if I should let the truck idle while at my appointment or what? I decided to shut it down due to low fuel and unknown time frame. After my appointment, I had to return a couple miles back to the warehouse and I noticed the fuel consumption was quickly going down to only 21 miles to empty! (WTF?)

I didn't understand what was going on. After clocking out, I was able to get some fuel a few miles away but still not sure the best recourse for this process to play out.

So, thank you very much for the explanation - looks like I need to hit the highway for a short road trip to allow this process to play out.

You can interrupt, it will pick back up when you drive again. They will not regen in park for future reference.

 

[HighlandRidge]

You can interrupt, it will pick back up when you drive again. They will not regen in park for future reference.

Thanks for the info - This is my first diesel truck and the learning curve is a bit steep! Last year I was pulling a 16K lbs 5th wheel all over the country without any issues. For the past two months I've been local and only running short trips with no load. I have today off so I'm gonna go open it up on the highway this afternoon and clear it out.