Today I have been diving in the playstation forums and I found a reference to a page that collects all error codes that the console can give you. Although I could already experience that unfortunately not always the solution works (in fact network problems are usually linked with DNSs and not the router as shown), in any case I think it is useful to identify the possible problem and guide towards its solution. I attach it to you here:
PlayStation error codes
PlayStation error codes
Moderador: gtwiin