As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT SUSPENDS TAKE OFF DUE TO EICAS (L FLT CONT HYD) MESSAGE. THE HYDRAULIC SHUTOFF VALVE WAS VERIFIED AND IT WAS CORRECT. FIM PROCEDURE WAS ACCOMPLISHED AND NON FAILURE INDICATION WAS DETECTED. DURING OVERNIGHT SERVICE THE HYDRAULIC SHUTOFF VALVE WAS REPLACED IAW MM, TEST OK.