As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BEFORE TAKEOFF ROLL THE CREW GOT A BLEED SOV CAS MESSAGE, THEY CONSULTED WITH MECHANIC AND WERE ABLE TO GET IT TO CLEAR. CREW ATTEMPTED TAKEOFF AGAIN RECEIVED A BLEED SOV CAS MESSAGE. THE AC RETURNED TO THE GATE. MECHANIC REPLACED THE FLOW CONTROL VALVE. WITH NO FURTHER DISCREPANCIES NOTED THE AC WAS RETURNED TO SERVICE. (K)