As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING FLIGHT 3372, RT AIR VALVE LIGHT ILLUMINATED INFLIGHT WENT OUT AND CAME BACK ON AFTER 2 MINUTES. AIR RETURN TO MSP. MAINTENANCE REPLACED RT BLEED AIR SHUTOFF VALVE PER CTY-5 MM 75-00-00 OPS CHECK GOOD ON 20 MIN GROUND RUN PER MM 72-00-00 AC RETURNED TO SERVICE.