As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AMBER CDS FAULT MESSAGE ON BOTH PFD'S. ACFT GROUNDED. DEU BITE NR 1 AND NR 2 SHOWED FAULT 31-65030, EEC DATA DISAGREE. PERFORMED EEC BITE, NR 2 OPS NORMAL. NR 1 EEC BITE SHOWED FAULT 73-20101, EEC INTERNAL FAULT. CHANNEL "A" DATA NOT AVAILABLE. REPLACED NR 1 ENG EEC IAW AMM 73-21-60-000-801-F00 AND -400-801-F00, OPS NORMAL. PERFORMED DEU NR 1 AND NR 2 BITE IAW AMM 31-62-00-710-801, OPS NORMAL. CDS FAULT MESSAGE GONE.