As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EN ROUTE CREW RECEIVED AN ANTI-ICE L WINDSHIELD ECAM MSG. FLIGHT RETURNED TO FIELD & LANDED WITHOUT INCIDENT. TROUBLE SHOT IAW TSM 30-42-00-810-801A, SENSORS ALL CHECKED NORMAL WITH ACFT PRESSURIZED OR UNPRESSURIZED. WIRES CHECKED NORMAL. SUSPECT NOT ONLY PRESS BUT TEMPERATURE TO CAUSE SENSOR 1 FAULT IN FLIGHT. SWAPPED SENSOR USAGE FROM SENSOR 1 TO SPARE SENSOR 2 IAW ESPM 20-44-11. OPERATIONS CHECKED GOOD.