As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED LT BLEED DUCT WARNING. AIRCRAFT RETURNED TO CLT LANDING WITHOUT INCIDENT. MAINTENANCE TROUBLESHOT USING THE AIRCRAFT MAINTENANCE MANUAL AND REPOSITIONED BLEED LOOPS A & B. CHECKS WERE MADE PER THE AIRCRAFT MAINTENANCE MANUAL AND THE AIRCRAFT RELEASED FOR SERVICE.