As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT ENGINE BLEED OFF CAME ON TAKEOFF. CYCLED ISOLATION VALVE AND SYS OPERATED NORMALLY IAW CREW COMMENT CYCLED ISO VALVE DURING TAXI BACK TO GATE, NR 1 BLEED CHECKED NORMAL IAW CREW REPORT. ACFT OK TO CONTINUE. NOTE: NO MX PERFORMED OR REQUIRED.