As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WX FAIL AND TERR FAIL ON FOS NAV DISPLAY, WEATHER AND TERRAIN WORK ON LOWER DU WHEN FO SELECTS LOWER DU NAV DISPLAY. GROUNDED - YES. FOUND #2 DEU INOP. BITE REF FIM 31-62 TASK 801. CODE 31-60012. OPENED, THEN RESET 2EA C/B ON P6-1 D9, D11. #2 DEU NOW OPS NML REF FIM 31-62 TASK 802. WXR & GPWS/TERR OPS NML REF AMM 34-43-00 AND 24-46-00. ETOPS GND VERIFICATION TEST SUCCESSFUL.