Technical U05A4 -86 Error Code - A! Check Engine Fiat Ducato 2021

[MichaelDucatoDK]

Fiat Ducato 2.3 140Hp 9speed Auto, year 2021, 22000 km, VIN:ZFA25000002R916xx

ECM HwVers:00 SwVer: 0051 (updated by Fiat Professional per 2023-07-10)

After Software update below error code logged 5 secs after Start Engine...

Most of time its not logged as fatal error, but suddenly its logged as fatal error (A! Check Engine)

Read out via OBD plug,

ECM(ECU) U05A4-86 the App used don't know this error code

From DTC Database - Mobil App OBD Auto Doctor
U05A4 Generic-Network Particle Matter Sensor Received Invalid Data From ECM/PCM

Cause the Fiat mechanical says, they can't do anything cause Vacation and Sparepart is not available...

I was forced to do some self investigations..

What I have done,
PMS connectors checked/cleaned with contact cleaner.
Re-gen (done 2 times)
Add Diesel cleaner for a tank full..
Removed PM Sensor and clean with Service Clean

But fail logged 5 secs after Engine start

Question:
Anyone there have same observation after ECM/ECU) Sw Update to version 0051 ?
Other there have knowledge about this Error U05A4-86 - will replacement of PMS solved this?

And where to buy this PMS - Nothing available in DK at the moment - they say.

At Fiatcamper.com there is no recall on this VIN number.

Any help/feedback is appricated

Br
Michael/Copenhagen DK

 

[Karizmo]

Do you solve your problem ?

 

[Reg 65]

Sorry I didn't see this thread earlier
I also have a 2021 2.3 140 Ducato (with manual gearbox)
I recently had the particulate matter replaced under warranty
(start stop inoperative check engine light came on)
(3 year 'Fiat Professional Dealer Warranty' since its a van, not a motorhome)
The fitter said its not a recall
But it is a known issue with the particulate matter sensor of that year
So much so they had sensors in stock and were able to fix it first visit.
Access is not too bad because its located under the van screwed into the exhaust pipe

 

[MGRace]

I have a 2020 CARTHAGO motorhome based on a FIAT DUCATO 189 with an automatic transmission. After the update, a DPF sensor error appeared. How did you solve the problem?

 

[Karizmo]

Yes you have to change DPF sensor, ter is new noumber