[iJo09]

Hello!
I have a problem with Fiat 1.2 engine code 169A4000. MIL flashes on cluster and I cannot start vehicle. DTC in ECU is P1110-54 Missing fuel supply system calibration.
What can I use to do calibration? AlfaOBD and MES do not work and I am really getting mad at this.

[Tracshan]

Always a good idea to provide full vehicle information to begin.

What year vehicle is this, and was this vehicle in an accident?

[iJo09]

MY 2019, and no this vehicle has never been in an accident, I am the first owner and bought it new.
Anyway after about two hours of thinking and trying to do something in MES, I found the solution.
Just do the "Fuel supply system purge" procedure, BUT (BUT!) do not turn key to OFF when MES tells you to do so! Wait at least 10 to 15 seconds before turning key OFF. I think ECU sends "command finished" message to OBD and so MES tells you the procedure is finished and to turn key off. But this is wrong because in this moment the ECU has just started the fuel supply system learning procedure!
After waiting the correct times, the vehicle started without any problem and no more DTCs

I want to post solution here because maybe can be helpful for someone in this same situation! I tried searching the internet but found nothing sadly