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Old 07-08-2016, 08:38 PM   #1
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2011 Ram 3500 P2459 code

Anyone know how to cure or get rid of this code. It says particulate regen frequency.It came on yesterday coming home from the dealer towing the 5er.It was about 100 out,but truck was running fine. I don't see the truck regen very often.Only clue it is the fuel mileage drops into the single digits on the DIC.
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Old 07-08-2016, 09:09 PM   #2
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Anyone know how to cure or get rid of this code. It says particulate regen frequency.It came on yesterday coming home from the dealer towing the 5er.It was about 100 out,but truck was running fine. I don't see the truck regen very often.Only clue it is the fuel mileage drops into the single digits on the DIC.
On my 08 it goes away by itself, however I believe when it starts you are to keep driving until the regen cycle completes.
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Old 07-08-2016, 09:20 PM   #3
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Give me the 5th, 8th and 10th digits of your vin and I'll look it up
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Old 07-08-2016, 09:28 PM   #4
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A full regen requires 30miles, 70mph, NO cruise control to do a PROPER regen.
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Old 07-08-2016, 10:44 PM   #5
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Did some google searching.... (won't be able to plug in the vin data till monday when i hook up to another dodge we have at the shop)

Apparently this is a very common code for dodge and there are alot of issues with it and Chrysler is aware of it. Supposedly there were some software "flashes" that were supposed to fix the issue, and then there are several people that have stated that at that time there wasn't a fix for it (that was a couple years ago).
Chrysler is pretty notorious for this type of "software " glitch issue. I have a buddy that is waiting ( and has been since last October) for a fix for his 2500 dodge with a surging problem.

Here is what the code is. Might be able to have it cleared or you might need a forced regen, or then again it could be the software glitch or somthing else. None of us on here can plug in and tell you though. You need to go to your dealer or another reputable diesel repair shop and get it looked at.
Good luck!
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Old 07-08-2016, 10:55 PM   #6
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A full regen requires 30miles, 70mph, NO cruise control to do a PROPER regen.
I don't see how this can be anywhere close to accurate. There are a lot of states and areas that don't have 70 mph speed limits.
The manuals I've seen say that it CAN take x amount of minutes or x amount of miles to complete a regen. Never heard of a speed related to it. Do you have proof of this speed requirement?

I can as well as anyone with a properly equipped scanner or computer can force a regen while the vehicle is sitting still.
Obviously this is not a good idea for everyone to be able to do this, because many dont know what they are doing and what conditions would be needed to perform this safely.
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Old 07-08-2016, 11:09 PM   #7
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I don't see how this can be anywhere close to accurate. There are a lot of states and areas that don't have 70 mph speed limits.
The manuals I've seen say that it CAN take x amount of minutes or x amount of miles to complete a regen. Never heard of a speed related to it. Do you have proof of this speed requirement?

I can as well as anyone with a properly equipped scanner or computer can force a regen while the vehicle is sitting still.
Obviously this is not a good idea for everyone to be able to do this, because many dont know what they are doing and what conditions would be needed to perform this safely.
My F350 manual says it takes about 20 minutes or less at 30 MPH. 70MPH would be extremely difficult where I live without a speeding ticket.
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Old 07-08-2016, 11:19 PM   #8
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My F350 manual says it takes about 20 minutes or less at 30 MPH. 70MPH would be extremely difficult where I live without a speeding ticket.
Thats more in line with what I've seen.
I've worked at numerous dealerships, and none of them were located close to a road with a speed limit over 60mph.
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Old 07-09-2016, 06:19 AM   #9
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It wasn't regenerating. The CEL just came on.No drop in mileage. I was running about 68 on interstate. I have a buddy that is a Dodge mechanic that is going to bring his stuff home and try refreshing it.
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Old 07-09-2016, 09:04 AM   #10
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It wasn't regenerating. The CEL just came on.No drop in mileage. I was running about 68 on interstate. I have a buddy that is a Dodge mechanic that is going to bring his stuff home and try refreshing it.
Good deal!
Hope he can get it all cleared up for you!
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