As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EICAS MESSAGE "LT ENG PRV" CREW PERFORMED FLIGHT MAN PROCEDURE FOR LT PRV. WITH LT BLEED SELECTED OFF. THE LT BLEED MANIFOLD SHOWED 10 PSI & LT PACK DID NOT GIVE OFF LIGHT. SUSPECT PRSOV NOT FULLY CLOSED IN ADDITION TO PRV FAULT. REPLACED PRV REF AMM. RAN ENGINES, OPS CHECKED NORMAL.