As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
POWERPLANT MESSAGE ON ED AT CRUISE. RETURNED TO FIELD. LANDING UNEVENTFUL. FOUND FAULT IN EMU NR 2 PROP 12B, 456A & B, 30B. UNABLE TO CLEAR FAULTS. REMOVED AND REPLACED NR 2 PEC IAW AMM TASK 61-20-36-000-801, AND 61-20-36-400-801. OPS CHECKED GOOD. RETURNED TO SERVICE.