As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED RT COWL ANTI-ICE CAUTION MESSAGE. CREW RAN QRH, MESSAGE PERSISTED IN FLIGHT WITH COWL ANTI-ICE SELECTED OFF. CREW RETURNED TO FIELD AND LANDED WITHOUT INCIDENT. MAINTENANCE TROUBLESHOT, R & R RT ENGINE COWL ANTI-ICE VALVE AND PERFORMED CHECKS IAW AMM. ACFT RELEASED FOR SERVICE.