As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ETOPS SIGNIFICANT SYSTEM, STATUS MESSAGE LT ENG EEC C1 DISPLAYED. PIMU BITE SHOWS EEC CH-A/B B25 FD-BK FAIL. PERFORMED CORRECTIVE ACTION PIMU MSG INDEX AND FIM 73-21-00. REMOVED CONNECTOR FROM 2.5 BLEED VALVE AND CHECKED PINS NO TROUBLE FOUND. RESEATED CONNECTOR AND RAN PIMU BITE. BITE SHOWS NO FAULT AND NO STATUS MSGS. PER REPAIR CONFIRMATION ACFT OK FOR SERVICE.