As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EICAS MSG "L ENG BLEED OFF" DISPLAYED. ENG BLEED AIR VLV OFF LIGHT ILLUM WITH SW ON & ENG RUNNING. DUCT PRESS WAS ZERO. NACELLE ANTI ICE FAILED TO OPERATE. FOUND LOOSE SENSE LINE AT FAV SECURED LINE PERFORMED OPS CK IAW MM 36-11-16-4 AND BITE TEST OF AIR SUPPLY BITE MODULE, BLEED SYSTEM OPS CK GOOD.