Technical P0238 on new Ducato

[Ducato180]

Hi everbody

I have a Ducato 2.2 250 2023 and I am getting now the P0238 + limp mode on every hill, even on just moderate upward slopes. After a couple of 100kms on the same day it is so bad that even a slight acceleration from 40 to 41km/h on a flat road will result in a P0238.

On the next day with a cold motor it is okayish, the P0238 only showing when doing a decent acceleration, but as the day continues it is getting worse and worse.

It is not accompanied by a P0401, indicating a clogged EGR, as I have read on threads about P0238 with older models.

I have deleted the DPF (physically removed it's interieur) some 20.000kms ago. Something must be clogged because of that. So far I've checked LP-EGR cooler, Diesel filter, air filter - all seemed okay to me. Haven't checked the HP-EGR so far, that is the next on my list.

Any thoughts on that?

Thanks a lot

 

[ducatambo]

when you say you 'deleted' the DPF, did you re-program the ECU to account for it's removal? I understand that's what 'delete' usually means. If you didn't, it would make sense that faults are occurring.

 

[Ducato180]

when you say you 'deleted' the DPF, did you re-program the ECU to account for it's removal? I understand that's what 'delete' usually means. If you didn't, it would make sense that faults are occurring.

This new ECU is not re-programmable, so back then I disconnected 5 major sensors and simulated them. This setting worked fine for 20.000km

 

[Jockstrap]

Guess the warranty is blown?

Try this thread "Ducato P0401 P0402 P0236 P0238 and limp mode its 2017 Euro 6, EGR changed, What do I check next" on here.

Might help.

 

[Ducato180]

Yes, that is blown for sure.

 

[Ducato180]

Thanks, I am in the process of working through those 90+ pages. From what I understand it is mainly about 1. older vehicles and 2. accompanied by some P0401, P0402, ..., which indicates some malfunctioning EGR.

 

[Ducato180]

I get solely the P0238 without any P040xs, so the EGR seems to be okay in my case. What else could it be?

 

[Jockstrap]

Some later posts refer to Euro 6 and some differences. I do not know of any public docs for the 2.2 which was approx 2022 to 2024.

In answer to your last question. Sorry but who knows? Could be sticky .

Interesting to see if you get a solution but I have no ideas other than a complete strip. If not mechanical, .