As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EN ROUTE IAD-CDG, AIRCRAFT RETURN TO FIELD FOR LOSS OF RIGHT HAND DUCT PRESSURE AND STATUS MESSAGE TRIM AIR R. *S/D* FIM 36-22, TASK 801 ACCOMPLISHED. REPLACED MANIFOLD DUAL TEMPERATURE SENSOR (P/N:1150322-1), OPS CK GOOD. THE FAILED SENSOR HAS BEEN TESTED AND NO FAULTS FOUND. SUSPECT CONNECTOR.