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

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

All attempts/ ideas welcomed. As alternatives propriety DPF cleaners squirted up may be safer than high pressure caustic (not reccomended). The resting position of the valves (cold) would be usefull to know to prevent soot / caustic / rinse water being blasted down the turbo.
My compressor is around 7bar and after air passed though matrix and mesh it's probably dropped to around 2 bar and is defused a lot ,so I don't think any damage to LP egr possible, I'm going to tap into air line a tin of carburettor spray( should be ok to any plastic or seals) cleaner with total evaporation.
Worth a try !
 
My original thoughts on Insitu cleaning was to undo the elbow under the cooler, having removed temp probe first; then pump in caustic thro the elbow top and watching till it overflowed out the probe hole.
I came to a standstill because I couldn't undo the probe because I couldn't unplug it's wire. Plus a bad back.
I now have a way of plugging in the probe wires conveniently at the engine top so could afford to just snip the probe wires and solder an extension wire up to my new socket.
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I have a new probe plus new elbow gasket in case anyone needs part numbers.
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Maybe we could have a spacer elbow with tee piece at the elbow/ EGR joint?
 
My original thoughts on Insitu cleaning was to undo the elbow under the cooler, having removed temp probe first; then pump in caustic thro the elbow top and watching till it overflowed out the probe hole.
I came to a standstill because I couldn't undo the probe because I couldn't unplug it's wire. Plus a bad back.
I now have a way of plugging in the probe wires conveniently at the engine top so could afford to just snip the probe wires and solder an extension wire up to my new socket.
.
I have a new probe plus new elbow gasket in case anyone needs part numbers.
.
Maybe we could have a spacer elbow with tee piece at the elbow/ EGR joint?
My entry point is from under van disconnect flex pipe off DPF hopefully get enough clearance to push rubber pipe ( fuel line ) up to the matrix inside cooler , plug up cooler pipe , then inject air and cleaner , twisting pipe around I found spreads air flow over greater area . Hopefully it should improve situation and cleaner evaporated,no risk to turbo or hydraulic lock .
But it's still a theory? Ideally I still want to get DPF replaced but my garage doesn't seem to be forthcoming with prices or time . Maybe they don't want the job !
 
So I've got quote to get van back to correct set up for anyone who wants to get a idea of how much it is at fiat professional garage.
Or if you need part numbers for reference.
 

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My quote has few more parts on it. It includes the MAP as I have the 'wrong' one fitted (from new). I'm not panicking just yet as I'm talking to Fiat Customer Care (onto whom I was fobbed having contacted the CEO).

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My quote has few more parts on it. It includes the MAP as I have the 'wrong' one fitted (from new). I'm not panicking just yet as I'm talking to Fiat Customer Care (onto whom I was fobbed having contacted the CEO).

View attachment 462798
I see they also a " if injectors need changing" that will go over a £10k bill . Hope you get something towards it from fiat!
 
My quote has few more parts on it. It includes the MAP as I have the 'wrong' one fitted (from new). I'm not panicking just yet as I'm talking to Fiat Customer Care (onto whom I was fobbed having contacted the CEO).

View attachment 462798
Glad to see contacting CEO Has resulted in some movement from the impasse with local dealer. Now time to ask for Fiat support. If it was a commercial vehicle it would be straight down the scrapyard but it isnt and fiat went after the lucrative Mhome buiseness, this is not standard wear and tear but result of initial design problems.
 
Glad to see contacting CEO Has resulted in some movement from the impasse with local dealer. Now time to ask for Fiat support. If it was a commercial vehicle it would be straight down the scrapyard but it isnt and fiat went after the lucrative Mhome buiseness, this is not standard wear and tear but result of initial design problems.
The service manager at my fiat professional garage had a conversation with me on Tuesday and did say have I tried going down the warranty route, but I'm sceptical I'd get anywhere,could take years and fighting. Life is to short sometimes for all the stress...
 
The service manager at my fiat professional garage had a conversation with me on Tuesday and did say have I tried going down the warranty route, but I'm sceptical I'd get anywhere,could take years and fighting. Life is to short sometimes for all the stress...
Is yours still under warranty @Serrow225 ? I'd definitely be going down that route if mine was. I first had the problem when it was just over 6yrs.
 
Is yours still under warranty @Serrow225 ? I'd definitely be going down that route if mine was. I first had the problem when it was just over 6yrs.
2018 , we got it 2021 ... But no service history.
Just service from motorhome dealer.
So I know fiat will have there legal side say .. well if we'd seen it as per service schedule it would have been flagged up ! .. and without going into personal details we have spent two years so far in a legal battle with local health authority over malpractice.. so we don't want another battle now .
 
I even found the Original ECU Software in the Web If you search for it. On a lot of Sites for Chiptuning you can also purchase and download the unmodified Original ECU Softwarefiles.
I wonder what the differences are between the software versions, between the older v28 or v25 and the newest v32. Since it is possible to download the software, maybe someone has the possibility and knowledge to compare both programs, e.g. in the WinOLS program.
 
I wonder what the differences are between the software versions, between the older v28 or v25 and the newest v32. Since it is possible to download the software, maybe someone has the possibility and knowledge to compare both programs, e.g. in the WinOLS program.
Apart from a vehicle with a known Version where is it possible to obtain/ down load the software. Anybody with the software and or knowledge please stand up
 
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