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P2002 light issue

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Hello, I have a 2021 with about 90k miles on it now, i drive about 1 hr 5 days a week one way to work, and another back- on the weekends I tow hay trailers, livestock trailers etc- minimal idling, minimal short trips etc. ( wanted to get that a out of the way early) tldr- I have a P2002 code, that cannot be cleared, the dealer says its "active code" cant clear it it comes back- they cant find anything wrong , said there normal procedure is to remove and install a new dpf- and sensors- which they cant even do because they don't have any. they gave me the wink nod and suggested I " take care of the problem permanently myself" - we all know what they were suggesting- BUT Id like to see if anyone has had any luck with removing and cleaning the sensors, or replacing them etc-

long story- truck ran fine- got a CEL , it needed a new ccv filter , my fault didn't replace it earlier, wasn't tracking it. so ordered one, drove a few days, then replaced it- apparently while the CEL light was on for that, it stopped regens- got the filter a few days later and swapped it out- was dirty but not crazy- new filter, cleared CEL, still no regens- I tried the DPF nake oils, towing heavy- driving methods nothing- took to dealer and had them force a regen- all better ? nope- on the way home from dealer the p2002 code came on- ( regens fine, truck drives fine, no change to performance, MPG etc) back to dealer later - basically say nothign they can do except swap def/sensors out of poicket cost to me- they confirmed, that, based on my usage, lack of soot in tail pipe, nothign obviously cracked or emmiting under neath- that the dpf is probably fine- I commented well i had none of these issues before the mandatory ecm reflash- and they said, yeah we get a lot of stuff since the reflash, liek the trucks are more sensitive now- lookign for suggestions, other than a full removal of the system- tell me where the sensor is and Ill pull it and replace - havtn found a good pic/ description fo whcih sensor it is, was hopign to order a new one to have on hand when i attempt to remove and clean in case it breaks. so truck runs great, just has the P2002 Code, if i clear it with my hand held, it says perm code- im open to suggestions, really dotn want to weight loss it cause i may want to sell or trade it later- pic for attention
 

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Hello, I have a 2021 with about 90k miles on it now, i drive about 1 hr 5 days a week one way to work, and another back- on the weekends I tow hay trailers, livestock trailers etc- minimal idling, minimal short trips etc. ( wanted to get that a out of the way early) tldr- I have a P2002 code, that cannot be cleared, the dealer says its "active code" cant clear it it comes back- they cant find anything wrong , said there normal procedure is to remove and install a new dpf- and sensors- which they cant even do because they don't have any. they gave me the wink nod and suggested I " take care of the problem permanently myself" - we all know what they were suggesting- BUT Id like to see if anyone has had any luck with removing and cleaning the sensors, or replacing them etc-

long story- truck ran fine- got a CEL , it needed a new ccv filter , my fault didn't replace it earlier, wasn't tracking it. so ordered one, drove a few days, then replaced it- apparently while the CEL light was on for that, it stopped regens- got the filter a few days later and swapped it out- was dirty but not crazy- new filter, cleared CEL, still no regens- I tried the DPF nake oils, towing heavy- driving methods nothing- took to dealer and had them force a regen- all better ? nope- on the way home from dealer the p2002 code came on- ( regens fine, truck drives fine, no change to performance, MPG etc) back to dealer later - basically say nothign they can do except swap def/sensors out of poicket cost to me- they confirmed, that, based on my usage, lack of soot in tail pipe, nothign obviously cracked or emmiting under neath- that the dpf is probably fine- I commented well i had none of these issues before the mandatory ecm reflash- and they said, yeah we get a lot of stuff since the reflash, liek the trucks are more sensitive now- lookign for suggestions, other than a full removal of the system- tell me where the sensor is and Ill pull it and replace - havtn found a good pic/ description fo whcih sensor it is, was hopign to order a new one to have on hand when i attempt to remove and clean in case it breaks. so truck runs great, just has the P2002 Code, if i clear it with my hand held, it says perm code- im open to suggestions, really dotn want to weight loss it cause i may want to sell or trade it later- pic for attention
Use an inspection mirror and thoroughly inspect around every exhaust flange for signs of leakage (soot). Specifically around the upstream flange of the DPF assembly.
If found, change appropriate gasket, clear the code and drive the piss out of it.
 
I had p2002 code on my 2023 at about 45k miles. Dealer installed exhaust temp sensor under warranty and fixed the problem. It did go into 5mph in 90 miles mode before fix.
 
nothing looks sooty underneath, there is some black in my tail pipe, but i feel like its always been there- not crusty just black inside the tail pipe, none on the outside or on the truck body etc- wondering if i need to remove the sensors i can see and spray them off- they look pretty rusty on the pipes- hate to break them in the process- stuff looks so fragile under there
 
Hi there, if you would like an extra layer of assistance alongside the dealer, feel free to send our team a private message.

Diamond
Ram Cares
 
nothing looks sooty underneath, there is some black in my tail pipe, but i feel like its always been there- not crusty just black inside the tail pipe, none on the outside or on the truck body etc- wondering if i need to remove the sensors i can see and spray them off- they look pretty rusty on the pipes- hate to break them in the process- stuff looks so fragile under there
Just going off what what you've shared thus far.... dealer says can't find anything wrong but you have an active P2002 with the sensors working (assuming they actually looked/compared PIDs) and assuming they checked the PM/DP sensor(s) ... And you didn't find any inline exhaust leaks.... AND you have some soot at the exhaust tip(which there really shouldn't be much if any).....Considering all that together.
I'd say it's possible you have a failed DPF.. Possibly internally, meaning cracked filter media and bypassing. If so, that would require replacement. So even though it pains me to say it.... I'd "partially" agree with the dealer... Bad dpf, but if "they can't find anything" then I would heavily question the changing sensors bit. (sounds like shady upcharge territory to me)
 
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Just going off what what you've shared thus far.... dealer says can't find anything wrong but you have an active P2002 with the sensors working (assuming they actually looked/compared PIDs) and assuming they checked the PM/DP sensor(s) ... And you didn't find any inline exhaust leaks.... AND you have some soot at the exhaust tip(which there really shouldn't be much if any).....Considering all that together.
I'd say it's possible you have a failed DPF.. Possibly internally, meaning cracked filter media and bypassing. If so, that would require replacement. So even though it pains me to say it.... I'd "partially" agree with the dealer... Bad dpf, but if "they can't find anything" then I would heavily question the changing sensors bit. (sounds like shady upcharge territory to me)
could the cracked dpf be caused by the the force regen? the truck stopped regening- reported dpf full- so I
took to dealer for them to force regen- which they accomplished after a few tries- i don't care if they replace everything as long as i dont have to pay for it
 
could the cracked dpf be caused by the the force regen? the truck stopped regening- reported dpf full- so I
took to dealer for them to force regen- which they accomplished after a few tries- i don't care if they replace everything as long as i dont have to pay for it
Umm, my opinion, would not cause. They are designed for the heat so a standing regen shouldn't kill anything if it wasn't already compromised.
Unfortunately, IMHO, the overall topic of DPFs and how they are a "wearable component" isn't really discussed enough. They should last well over 100k mi. and up to 200+ but that varies widely depending on many many variables.

Also, reporting a full dpf.. And it actually being full are two different things. I'm curious if they confirmed it full and or face plugged... Or just inferred that is must be because of sensor reporting. Because your reported driving/usage (assuming you do not idle it alot) should be more than sufficient to maintain anti clog health... That said, if it was actually full(confirmed vs inferred) then something else has to be the cause, ie leaking injector among other possibles.
 
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so when it happened, it didn't act like anything was plugged- I hooked up a trailer and hauled a load of hay to help heat it up and passively burn it off - and no change- didn't feel down on power- then took to the dealer for forced regen- called the dealer today and dealer is going to order in some new sensors and try that first- to see if it clears the code- i think the ecm reflash made it more sensitive ( just gut feeling) after that- they may have to replace the dpf who knows- something is definitely wrong with the whole set up for Ram, cause all the dpf, dpf sensors etc are in short supply- dealer has trucks sitting around waiting on dpfs to arrive-
 
Umm, my opinion, would not cause. They are designed for the heat so a standing regen shouldn't kill anything if it wasn't already compromised.
Unfortunately, IMHO, the overall topic of DPFs and how they are a "wearable component" isn't really discussed enough. They should last well over 100k mi. and up to 200+ but that varies widely depending on many many variables.

Also, reporting a full dpf.. And it actually being full are two different things. I'm curious if they confirmed it full and or face plugged... Or just inferred that is must be because of sensor reporting. Because your reported driving/usage (assuming you do not idle it alot) should be more than sufficient to maintain anti clog health... That said, if it was actually full(confirmed vs inferred) then something else has to be the cause, ie leaking injector among other possibles.
so dpf regens properly, and the gauge goes back to zero- it regens according to the schedule/timer i believe , doesnt seem excessive, i notice it every couple days maybe, if i look- ive not gotten the message on regen in some time. dealer ordered a sensor, we will see. id love to sell this truck, but cant with a check engine light. doubtful anyone would want to buy, unless they already planned a delete. delete is not an option for me unless the epa makes it legal.
 
so dpf regens properly, and the gauge goes back to zero- it regens according to the schedule/timer i believe , doesnt seem excessive, i notice it every couple days maybe, if i look- ive not gotten the message on regen in some time. dealer ordered a sensor, we will see. id love to sell this truck, but cant with a check engine light. doubtful anyone would want to buy, unless they already planned a delete. delete is not an option for me unless the epa makes it legal.
The system will regen with either time (24 engine hours) or if the system detects soot load at or above ~45%. Note that this is "soot load" is calculated from the many many sensor inputs. There is not a directly measured soot load sensor, so if basically any of the sensors are acting up then it will throw off its correlated calculation and register a soot load that is likely inaccurate causing more frequent regens.
Recommend tracking your regens using trip A or B while monitoring your driving habits (ratio of passive regen highway driving vs city) to validate if the systems logic corresponds with reality.
Also, after the system completes a regen, it will always go back to zero, then for a given (unknown to me) amount of miles/hrs/drive cycles, it is re-measuring to establish its new "0 value". Interestingly though, if the system immediately calculates or thinks it sees a soot load after a completed regen it can convert that percentage behind the scenes into ash load value(which atjusts the 0). My understanding is calculated ash load can only be read with a scantool.
 
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thanks for the detailed info- everything seems in order except for the code- I can online imagine ( hope) its only a bad sensor(s) , but worse case the dpf has damage internally which is allowing it to flow more than the parameters allow- I'm hopeful it will be covered and taken care of, but I'm sure its gonna be a long and painful ordeal- seams like everything at a dealer ships takes weeks- months- the times ive discussed it, they make it sound like DPFs are on back order. this sort of thing makes me no longer want a modern diesel engine-
 
took it to a different dealership, said the dpf sensor is bad, and subsequently caused the DPF itself to be now cracked or broke- sensor is covered under warranty, the dpf isnt. ram cares is aware, and we are trying to see if we can get it all under warranty, price with no help is around $3500 I guess we will see- my logic is, if a part failed, and caused another part to also fail, shouldn't it all be covered?
 
took it to a different dealership, said the dpf sensor is bad, and subsequently caused the DPF itself to be now cracked or broke- sensor is covered under warranty, the dpf isnt. ram cares is aware, and we are trying to see if we can get it all under warranty, price with no help is around $3500 I guess we will see- my logic is, if a part failed, and caused another part to also fail, shouldn't it all be covered?
I'd agree with your logic and add that a failed sensor in this system really can't be a sole cause of a failed dpf... Contribute yes but not sole.
And given the many TSBs they have released that often direct changing the DPF... They need to cover this.
 
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Replaced my dpf at 47000 miles. 23 2500 I have 54000 on it now. Started throwing all the same codes again. These new exhaust systems are pure junk. I know when I am able to unload this junker, I will never own another new diesel truck.
 
If you are looking for any assistance on this let us know, @Kktulsa. We understand this is more than frustrating.

Hannah
Ram Cares
 
Hi again, @Kktulsa! For us to better discuss how to support you best and to better look into this matter we request you send a private message our way.

Hannah
Ram Cares
 
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