As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
L ENG GEN WILL NOT RESET FWD EQP SUP FAN 1. TR UNIT AND L ENG EEC C1 STATUS MSG. CARRIED OUT BITE CHK OF BPCU. INSPECTED LEFT ENG GENERATOR FEED CABLES AND GENERATOR HARNESS CONNECTOR. NO FAULTS FOUND. REPLACED GCU AND CARRIED OUT ENG RUN. OPERATES NORMALLY.