As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) ON TAXI-IN, FLIGHT CREW RECEIVED AN AURAL FIRE WARNING. CONTINUED TO THE GATE, CRF WAS CALLED TO THE ACFT FOR PRECAUTIONARY REASONS. RAMP CREW WERE KEPT CLEAR, AND CRF CLEARED ACFT WITHOUT INCIDENT. MASTER WARNING MODULE, M618 REPLACED IAW AMM 31-51-04 PB401.