As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE CREW REPORTED AN ENGINE NR 2 FIRE DETECTOR FAILED MESSAGE DURING CRUISE. LASTED FOR FIVE MINUTES THEN WENT AWAY FOR ONE MINUTE THEN CAME BACK ON. THE ACFT LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE INSPECTED AND REPLACED THE FIRE CONTROL MODULE IAW 26-11-03. OPS CHECKS WERE GOOD.