As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED. AT FLIGHT IDLE, N1 AND N2 SPLIT BETWEEN LEFT AND RIGHT ENGINE. MAINTENANCE REPLACED LEFT ENGINE FUEL TEMPERATURE THERMOCOUPLE PER AMM 73-35-15. FADEC OPERATIONS TEST AND IDLE LEAK CHECKS ACCOMPLISHED SATISFACTORY.