As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING MAINTENANCE PREFLIGHT FOUND APU FIRE LP 2 STATUS MESSAGE . MTX GROUNDED AC .MTX THEN DEFERRED THE APU LP2 FIRE LOOP IAW MEL 26-15-1-1. AC REMAINS NO ETOPS PLACARDS INSTALLED C/W MX PROCEDURES MBCB 01/05/26. AND RETURNED A/C TO SERVICE