As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
#1 ENGINE HAS SHORT TIME ENG 1 EEC C1 FAULT 73-43871, ENGINE FAN INLET (T12) TEMPERATURE SENSOR AND ADIRU AIR TEMPERATURE SIGNALS DO NOT AGREE. GROUNDED - YES. REMOVED AND REPLACED #1 ENG T12 SENSOR REF B737-9 AMM 73-21-06-000/400-801-G00.