you need to replace the cleaning web roller. Check to see if it has advanced entirely and is used up. It's around $20, I understand.
It could also apparently be the fuserweb.
There is also the possibility that the finisher cable is loose.
Apparently, there is a bit of software called NetSpot that comes with the printer, for use on computers. The status tab in this app is supposed to help with resolving errors.
You may also need to clear the error condition once maintenance is performed (or you could try it if nothing actually seems to be wrong). Try this:
"*28* (additional functions *) will get you into service mode. Then under functions>clear>err should get rid of the error code & you may possibly need to reset the web counter"
Hope this helps you out. Apparently, Canon just wants you to have it officially serviced (and they don't make anything related to this available on their sites, besides various drivers).