As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE ACCOMPLISHING ASA ASA T/C 05-020-01 FOUND SMT ENG EEC C2 FAULT CODE 731 451 51 CORRELATED MAINTENANCE MESSAGE 73-41420 ON LEG-1. DPC-1 HAS NO EEC CHANNEL-B INPUT ON ARINC-429 DETECTED BY ENG:1 EEC. GROUNDED - YES. CW B737-9 IFIM G73-20-00-810-809. FAULT NOT ACTIVE. ONE OCCURRENCE AT TIME OF PLT LEG 31.