As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: FLIGHT RETURNED TO AUS ON ACCOUNT OF NUMBER 1 ENGINE HIGH TEMPERATURE INDICATION. EMERGENCY WAS DECLARED. MAINTENANCE TROUBLESHOT IAW FIM 72-00-00-810-801-A/200. REPLACED OIL LEVEL/ TEMP SENSOR @ #1 ENGINE IAW AMM 79-31-01. PERFORMED RUNUP TEST AND LEAK CHECK GOOD.