As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PHX - FLT 45 EN-ROUTE PHX TO KOA. THE FLIGHT RECEIVED AN EICAS STATUS MESSAGE "R ENGINE FIRE LOOP 2" DURING CRUISE. THE FLIGHT RETURNED TO PHX AND LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE REPLACED CHAFED WIRES BETWEEN CONNECTORS D1008P AND D1408. SYSTEM CHECKS OK.