As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED RECEIVING A BLEED 1 LEAK MESSAGE ON THE EICAS DURING FLIGHT. MAINTENANCE INSPECTED AND FOUND THE CLAMP AT THE DUAL TEMP CONTROL VALVE LOOSE. THE CLAMP WAS TIGHTENED AND AN OPERATIONAL CHECK OF THE SYSTEM WAS PERFORMED WITH NO LEAKS FOUND.