Welcome to the PlayStation Community.
You may want to give us some more information than you already have, in fact you haven't given us any, like what were you doing when it happens, does it happen all the time or only some of the time, how long has it been happening.
Basically the more we know from you the more we can try to help you!
You can look your error code up using the link below:
Customer Service - 1-800-345-SONY (7669)
Account & billing Support -1-877-971-SONY (7669)
Available Mon to Fri 8am - 8pm PST