that error code is for an inability to log in to PSN.
and yes, due to a lawsuit with the LG company over blu-ray content, a new user agreement was generated two weeks ago, and I was unable to play GT5 online, and the menu in GT5 prompted me to quit the game and log in from the XMB menu.
If that dosen't work, try turning OFF your router, then turning it back on, or invest in a CAT6 ethernet cable...