As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 5699 - RECEIVED ANTI-ICE DUCT MESSAGE WITH RED INDICATING ON RIGHT FUSELAGE. C/W QRH, MESSAGE WENT AWAY AFTER ABOUT 1 MINUTE. DECLARED EMERGENCY, LANDED BHM WITHOUT INCIDENT. REPLACED AFT BAY SENSING ELEMENT. NO FURTHER DEFECTS.