As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE ACCOMPLISHING T/C 78273000 #2 ENGINE SHOWS SHORT TIME FAULT MSG 73-21282 EEC CHANNEL IS NOT ENERGIZED WITH THE ALTERNATOR VOLTAGE FLIGHT LEG 1 AND 3. GROUNDED - YES. PERFORMED B737-800 FIM 73-27 TASK 805 FOUND FAULT 73-21282 REMAINS ACTIVE ALSO FAULTING IN HISTORY LEGS 1,3,5. REPLACED EEC REF B737-800 AMM 73-21-40/401 ALL TEST PASS NO FAULTS. ENGINE RUN SHOWS NO FAULTS ALSO.