Dtc 040 & 041 ?? EGR codes...

[Nor-Cal Nick]

Trying to stop a DTC 040 & 041 from tuning the check engine light on my o.s7083 LMM. It comes up as EGR codes and I do have a EGR plate installed and also have lost the remote start on my truck. Truck fires and shuts right down. Can anyone help with the fix?

Thanks Nick.

[Schweinmesser]

monitoring thread....

Nick, what's the full DTC code?

[Nor-Cal Nick]

P041D - no description
P040D - no description
P2457 - Exhaust Gas Recirculation Cooling System Performance
P2033 - Exhaust Gas Temp. Sencor Circuit High bank 1 Sencor 2

[Schweinmesser]

I just looked at my tune, which is stock minus DPF, and it shows under DTC Enables {C6001}: (My OS is 8594)

P041D,P041C X: Not Reported, No MIL
P040D,P040C X: Not Reported, No MIL

P2457 "Exhaust Gas Recirculation Cooling System Perfomance" X: Not Reported, No MIL


P2033 - P2032 EGT Sensor 2 X: Not Reported, No MIL

Along with the P2033, I set P0546 - P0545 to X: Not Reported, No MIL
because I have the sensors unplugged.

If I pull DTC using the Flashscan V2, I still get the P2033, P0545, and P2455, but no MIL light. If I pull DTCs using the Banks PDA, I get no codes. Go figure.

What do you have those DTC Enables set at in your tune?

-Ronnie

[Nor-Cal Nick]

OK..so I just looked at my 7083o.s and it will not let see or turn the 040 & 041 off. Then I opened up a 8594o.s and you are able to pull it up and turn them off.

So, I did have someone tell me that the truck may need to get re flashed but I also am trying to fix my truck and 1 other with the same issue and 7083o.s. I don't know if we can get that truck re-flashed.

Next question, what are we going to loose if we are going to loose rather gain by re-flashing to a 8594o.s? Performance?

[Schweinmesser]

Well, mine got the reflash in August as per the recall notice for the no-start issue, that I didn't have. I heard that this reflash was the one that would start logging CVNs and stuff, could be wrong though. After getting the reflash, I noticed that the truck would go longer before regenerating. I still had that thing on then. Other than that, I don't know what you would loose/gain performance wise.

[Nor-Cal Nick]

OK... I remember we talked about that when you where here. I need to look into that now also to see what way I want to go.

Thanks Ronnie!!

[rcr1978]

Well, mine got the reflash in August as per the recall notice for the no-start issue, that I didn't have. I heard that this reflash was the one that would start logging CVNs and stuff, could be wrong though. After getting the reflash, I noticed that the truck would go longer before regenerating. I still had that thing on then. Other than that, I don't know what you would loose/gain performance wise.

I thought all LMM's logged cvn's, even the early 07 OS. Can somebody verify this?

[MMLMM]

Nick (nor-cal) can you give me a call when you get time. I had same issue, got part of it fixed. I think it may work for you. Curious on what tune your running, I am running the same OS and have not had the re-flash, nor will I

Mike @ 702-885-6958




We'll post up what we find out lol.

[JoshH]

Any update on this? I'm having a similar issue right now. I have codes P2033, P2455, and P0546 that keep popping up despite being set to X:Not Reported, No MIL. Anyone have any help for me on why these codes will not go away?