I had to reset mine and register again when I got my truck from FORD that had the Sirius Radio ... The Sirius XM Radio ID Control numbers was on my main information screen and in the manual... You will have to have both numbers to register...
I was also just looking up the error code on GOOGLE and they mentioned it may need to be reset if 12VDC Power has been disrupted. You might try the RESET procedure found in the manual or go on-line and read the manual for the radio...
I suspect you will have to register again and create a new SIRIUS XM ACCOUNT since it no longer belongs to the original owner's name... My cost is around $24 month for both the Sirius Radio Service and the GPS TRAVEL LINK plan... I use the road maps more than I do the radio service haha...
Roy Ken