As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING CRUISE, CREW RECEIVED NR 2 FUEL FILTER BYPASS CAUTION LIGHT. AFTER DISCUSSION WITH MAINTENANCE AND DISPATCH ELECTED TO RETURN FOR AIRCRAFT SWAP. FOR MAINTENANCE RECTIFICATION, THE NR 2 FUEL FILTER AND THE IMPENDING BYPASS SWITCH WERE REPLACED.