As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT ENGINE PRI CONT STATUS MESSAGE. CREW SHUTDOWN ENGINE, FOLLOWING EPCS MESSAGES (P) FCU-EEC, (P) FCU-F-B INT, 350-20. CLEARED MESSAGES, UPON RESTART LT ENG PRI CONT RE-APPEARED WITH FCU-EEC. RETURNED TO BASE. FOUND CONNECTOR LOOSE ON FCU. CLEANED & SECURED CONNECTOR. RAN ENGINE TWICE PER JRH 2-5-1 NO DEFECTS NOTED DURING RUN.