As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE ACCOMPLISHING T/C 05-020-01, FOUND "ENG 1 EEC C2" FAULT ON SCHEDULED MAINTENANCE TASK MESSAGES PAGE. GROUNDED - YES. PERFORMED IFIM TASK G73-10-00-810-803. ERASED FAULT MESSAGE. PERFORMED ENG IDLE SYSTEM TEST REF AMM G71-00-00-700-808-G00. FAULT DID NOT RETURN.