Technical Ducato P0401 P0402 P0236 P0238 and limp mode its 2017 Euro 6, EGR changed, What do I check next

[theoneandonly]

@theoneandonly Sorry. I was mad at myself for missing the regeneration process. I'll try to catch it next time and show the data from MES

dont worry ive missed so many of mine, but it will fill in part of the jigsaw

 

[theoneandonly]

@Ganterl this may useful for your garage

 

[deejays]

@deejays supurb work, it has needed doing for while. Originaly the information/ mis information came from Bosch UK via @Fredastaire but is compounded by poor database consistancy. The @MarcoWuerttemberger info concerning fuelling difference V28/V32 does not contradict maybe supports the info I was given by a "trusted " fiat pro dealership in that if you havent had a problem with V28 then keep it untill you do (the cynic in me says yes when its a problem it my pocket thats £10k lighter.). @serrow a repeat of what ive said previously,
dpf quality. One thing that ive said before and i know there will be no evidence to substantiate these thoughts (well not in the public domain) is that the ducato Dpf was of a new design and of a new production technology. I am not aware of the precise technology used (and no longer have contacts in Johnson Mathey) but with my knowledge of thick and thin film technolgies to coat ceramics i can sermise there could have been in the early days batch related production issues that could lead to cracking .
So what is causing the DPF to fail?
Possibly a combination of UPTO 3 issues
Dodgy? software
Injectors
Suspect batch of DPF

Software: one thing that is missing is detail on the temperature of regen with early versions and amount/timing of fuel injected to get a regen. If a difference between v28 and v32 also important. One thing relevant to this is is there more than 1 dodgy batch of dpf's eg late 18/19

@deejays a few questions
Have you had a blocked cooler/cracked dpf
have you the original c of c and know date from factory or any date eg from convertors date of export.
V24 too much to think you would have any MES data from that period or any regen info at all.

I'm trying to pin down dates of software Versions and manufacturing dates of problem vehicles.
The number of problem vehicles is quite low in comparrisson to Adblu but still too many possible time bombs ticking out there?

Thank you @theoneandonly . With so many Bosch part numbers, and vehicle manufacturer part numbers all overlapping with cross referencing for just one simple little part, it is no wonder that the entire industry is confused. That is why I asked for the actual transfer functions of each device - and just for the hell of it tested mine in vehicle to post calculate the impedance/temperature correlation. To answer your questions - I have so far had no issues with my vehicle and no evidence or symptoms of blocked cooler or cracked DPF - I periodically check with MES and exhaust wipes. I refer you to pages 51 through to 55 regarding the c of c and regen data as it has been covered off there when I first came across this thread. Cheers.

 

[theoneandonly]

Thank you @theoneandonly . With so many Bosch part numbers, and vehicle manufacturer part numbers all overlapping with cross referencing for just one simple little part, it is no wonder that the entire industry is confused. That is why I asked for the actual transfer functions of each device - and just for the hell of it tested mine in vehicle to post calculate the impedance/temperature correlation. To answer your questions - I have so far had no issues with my vehicle and no evidence or symptoms of blocked cooler or cracked DPF - I periodically check with MES and exhaust wipes. I refer you to pages 51 through to 55 regarding the c of c and regen data as it has been covered off there when I first came across this thread. Cheers.

Thanks we are all here to help each other either sort a problem or prevent one, I did have a little search through your posts but missed what I needed it wasn't just a lazy ask.

 

[deejays]

Thanks we are all here to help each other either sort a problem or prevent one, I did have a little search through your posts but missed what I needed it wasn't just a lazy ask.

No problem - we are all on the same page here I reckon.... cheers.

 

[theoneandonly]

No problem - we are all on the same page here I reckon.... cheers.

same 78 pages?

 

[deejays]

same 78 pages?

And then some....