As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 2 ENGINE FIRE TEST FAILURE. ACFT GROUNDED. PERFORMED GVI ON NR 2 ENGINE FIRE LOOPS, NO FAULTS FOUND. PERFORMED BITE CHECK ON ENGINES AND APU FIRE LOOPS ALL 8 LIGHTS ILLUMINATED. PERFORMED 1 & 2 FIRE LOOP TEST NO DEFAULTS FOUND. NO HISTORY 30 DAYS. POSSIBLE ELECTRICAL GLITCH. REF AMM 26-11-00-710-801, FIM TASK 26-10-00-810-801.