As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENGINE 2 EEC CHANNEL B DATA NOT AVAILABLE MESSAGE IN FMC EEC BITE MENU. GROUNDED-YES. FOUND ENGINE 2 EEC CHANNEL B INOPERABLE. EEC INTERNAL FAULT 73-10102. REMOVED AND REPLACED NR 2 EEC, PER B737-800 AMM 73-21-60/401 AND OPERATIONS CHECKED, PER AMM 73-21-00-700-802-F00. NO FAULTS NOTED, ALL CHECKS GOOD.