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 IN FLIGHT WITH ANTI-ICE SELECTED OFF. CREW RETURNED TO FIELD AND LANDED WITHOUT INCIDENT. MAINTENANCE TROUBLESHOT, R & R RT COWL ANTI-ICE PRESSURE SWITCH AND PERFORMED CHECKS IAW AMM. ACFT RELEASED FOR SERVICE.