Fiat Multipla 1.6 1v 4EF.G4 CKS correction

[gilleone]

Hi ,

I have disable dtc P0420 on Fiat Multipla 1.6 16v gasoline /cng but need to correct checksum .

Any idea ?

As attach ori file and file with dtc disabled .

[pike]

Hi,

with this solution you will get check engine on and possibly P0000 in diagnostics.

WinOLS not support this file for checksum.

[selveti2022]

your checksum corrected ...... your ecu is marelli this is why someone else from the forum could not correct the checksum because you have to use older version from winols to do the checksum in marelli ecus good luck