Volvo VOCOM II logs critical events and errors in an internal Device Error List. See section 7.5 Status tab.
The following overview will help you to determine possible faults and their causes and to carry out troubleshooting procedures.

Error code：0001
Fault：Wrong PSK
Cause：WLAN password doesmake sure that it matchesnotmatch the password on the Access Point.
Solution：Reenter password and make sure that it matches the password on Access Point.

hope it help！