As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT ENG PRV VALVE EICAS MESSAGE ON TAKE OFF. CREW ABORTED TAKEOFF (ATO) AND RETURNED TO THE GATE (BTB). PLACED ON DI IAW MEL 36-11-8-1-1A-1 MBCB 9.13.26 PLACARD INSTALLED DEACTIVATION PROCEDURES C/W. ACFT REMAINS NO ETOPS AND RELEASED CAT III A OPERATIONAL.