As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EN ROUTE FROM DTW TO MCI RECEIVED LEFT BLEED DUCT WARNING MSG, FOLLOWED BY LOSE OF PRESSURIZATION. EMERGENCY DECLARED, A/C DIVERTED TO ORD LANDED SAFELY. INSPECTED A/C FOUND LEFT BLEED SOV BLANKET TOUCHING LOOP MT137. REPOSITIONED BLANKET, OPS CHECK GOOD.