As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED RT 14TH DUCT, RED WARNING MESSAGE ON TAKEOFF. QRH WAS RUN AND MESSAGE PERSISTED. CREW RETURNED TO FIELD AND LANDED WITHOUT INCIDENT. MAINTENANCE TROUBLESHOT, R & R RT 14TH STAGE PYLON SENSING ELEMENT AND PERFORMED CHECKS IAW AMM. ACFT RELEASED FOR SERVICE.