Bosch KGU3201GB/01 Freezer auto-defrost program

The freezer temperature of my Bosch KGU3201GB/01 is dropping each time I open the door, but is going back to normal when I select the super freezing mode.

After reading a few threads on the forum, I suspect it can be the auto-defrost module that doesn’t work. There’s a thread about changing the auto-defrost to Timed Defrost but it’s about a slightly different model (the /07).

Would the code (P11) be the same for /01 model?

If not, does anybody know the code for the /01 model?

I plan to change the setting after a full 24 hours defrost.

I don’t want it to go to the bin, it worked great until now…

Thank you very much for your help.