As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
#2 ENG SMT SHOWS FAULT ENG 2 EEC 1. GROUNDED - YES. FOUND COORELATED MAINT MESSAGE 73-43984 ELECTRONIC OVERSPEED THRUST CONTROL MALFUNCTION ACCOMODATION TEST FAILED, ENG 2 EEC CHANNEL B, THIS LEG AND LEG 2. FAULT NOT ACTIVE. ACCOMPLISHED B737-9 IFIM TASK G73-20-00-810-928 AND TEST 32 TWICE. FAULT MESSAGE NO LONGER SHOWS. REPAIR CONFIRMATION SUCCESSFUL.