As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FAULT CODE 223 120 00 LEFT THROTTLE ALSO DRIVES PAST LIMIT "CARAT" IN CLIMBS / HIGH POWER DEMAND TO PREVENT EXCESSIVE SPLIT & DISCONNECT A/T. HOLDS OK IN CRUISE A/T ON . SYNCED WITH RIGHT THROTTLE. OK IN CRUISE. TROUBLESHOOTING PER FIM 22 32 00 810 801 FOUND EEC FAULT 73 21281. PERFORMED FIM TASK 73 27 00 810 805 F00. REPLACED NR 1 EEC. CONFIRMATION GOOD, NO ACTIVE FAULTS. NOTE AUTO THROTTLE SHOWS NO FAULTS DURING CURRENT STATUS TEST.