Technical 500 timing belt changed

[Pm3010]

Hi, I have changed the belt on our 8v 1.2 (2016) using locking tools. All good.
After driving several miles the car has gone into limp mode, upon return I've got the following codes
P0301 mis fire cyl1
P0304 mis fire cyl4
P0300 random/multiple misfire detected

No issues before I did the belt.

Any help appreciated
Tia

 

[rmjbn1]

Phonic wheel relearn needed?

See:

Cambelt replacement-issue(cyl2,3,multiple misfire) | FIAT 500 (2007+)

Hello, new owner of 1.2 8v fiat500c 2016. Did a preventative cambelt,waterpump and tensioner reppavement. Locked crank, locked camshaft(i have a cheap autodoc kit and camlocking tool couldnt fit because it was too thick so I locked it half way), replaced everything aligned forks, 2 full cam...

www.fiatforum.com

 

[Gina500]

Had similar error messages (no limp mode, fortunately) after the fiat dealership did the belt change. Brought it back, they did a phonic wheel relearn, no issues since.

 

[Pm3010]

Thanks guys, I have got mes now and done the relearn, all seems good.
Thank you