As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER PUSHBACK AND ENGINE START L ENG EEC AND R ENG EEC EICAS MESSAGES AND EEC INOP LIGHTS. AIRCRAFT BACK TO BLOCK AND GROUNDED BY MAINTENANCE. MAINTENANCE RESET EEC TEST SWITCH. RAN BOTH ENGINES. ALL EEC FUNCTIONS AND INDICATIONS NORMAL, REF B767 AMM 73-23-00. A/C REMAINS "ETOPS 180". AIRCRAFT RETURNED TO SERVICE