Help w Regen

[dmlum]

I've a 2011 Chevy Express mini school bus and make only short trips a couple times a week. I know this is terrible. It's my first diesel vehicle and honestly I've just been ignoring the keep driving, cleaning exhaust filter messages, as my trips are only about 5 miles in length. Now I'm getting reduced power and the dtc light is on. My scanner does have a dpf function however it won't let me force a Regen with the codes set. I clear the codes but they come back near instantly. What are my options now? Will a more advanced scan tool allow a forced service Regen even with dtc codes on? If not it seems like I'm in an endless cycle - I can regen because of the codes and the codes are on because I can't regen.

Any help is appreciated!

 

[Chevy1925]

Well… whats the code/s

 

[dmlum]

P2463 and p24a0

 

[TheBac]

Service regen may be your only option.

 

[Chevy1925]

Theres a proper proceedure required to run a forced regen and your scanner is not allowing it to. Im guessing that scanner can only put it in a passive regen for highway driving but you’re beyond that.

Gunna need a proper scanner that will actually guide you through it. The p24a0 is the givaway

 

[dmlum]

Theres a proper proceedure required to run a forced regen and your scanner is not allowing it to. Im guessing that scanner can only put it in a passive regen for highway driving but you’re beyond that.

Gunna need a proper scanner that will actually guide you through it. The p24a0 is the givaway

The scanner I'm using has the ability to run a service regeneration however it won't start, the reason being DTC codes. If you clear the codes they immediately come back, preventing it from running. I'm guessing a scanner a dealer would have could initiate a service regeneration regardless of if the CEL is on or not?

If the vehicle is in limp mode would manually cleaning the filter with a foam cleaner be an option? At least clean to get it to a point where I could get it onto the highway to do a mobile regen? Or are the soot levels too high at that point that a cleaner would be ineffective?

 

[Chevy1925]

Uh no, the codes are not inhibiting it. You not following the proper proceedure is and the reason your not following the proper proceedure is because you dont know it and the scanner you have is not telling you this.

Do not put anything in that dpf. Your pocket book is gunna get real light otherwise.

I do not have the proceedure memorized but i do know you cant start this regen without first starting with a cold truck and getting egt sensors up to a certain point. The truck has to run through verified check points via sensors so it doesnt melt the sum bitch down due to a incorrect reading sensor.

Not going to lie, you are going to be hours of frustration and possible money ahead by going to a shop that knows how to work on emission intact vehicles or find someone to delete it. What you want done is not easily explainable and when it suddenly kicks out of regen, you aint going to know why.

 

[2004LB7]

I agree with James. The LML's are picky when it comes to regenerations. Everything needs to be set and all the sensors ready. Each parameter met before it will allow a forced regen. If your scanner isn't telling you the inhibit reason, then you need another, better, bidirectional scanner that can do what's needed to force one.

And, again. The p24a0 code is a clue where to start

 

[dmlum]

The conditions are met, the inhibiting reason is the DTC light being on. The one time I was able to get the see regen to start it stopped, the reason being idle speed limited, and the reduced power message came back on. I'll see about getting another scanner.

 

[Mikey52]

Not sure about the LML, but on the L5P, there are 10 levels of settings on those codes. If you keep ignoring it and I think it gets to level 7, it will take a dealers scan tool to do a service regen. It may be more on the DEF side but not sure. On the L5P it won't start a service regen if the hood is not open.

 

[Ron Nielson]

Maybe something in this https://www.duramaxforum.com/threads/diy-indirect-injector-replacement-p24a0.935442/

 

[Chevy1925]

The conditions are met, the inhibiting reason is the DTC light being on. The one time I was able to get the see regen to start it stopped, the reason being idle speed limited, and the reduced power message came back on. I'll see about getting another scanner.

Well good luck, you know more than us i guess. Not even sure why you asked us.

Maybe something in this https://www.duramaxforum.com/threads/diy-indirect-injector-replacement-p24a0.935442/

He has no 420 code and hes already struggling with even understanding that a proceedure needs to be done for a service regen. Walking him through a test proceedure for the 9th injector may blow his top

 

[Ron Nielson]

You never know who you are dealing with. I just try to provide information, not decide the capabilities of those who post about problems.

 

[TheBac]

Id just take the truck to the dealer or competent shop and have a service regen done or get whatever sensors are not working correctly replaced. Sometimes you've just got to bite the bullet and pay a good mechanic.