As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SEA - FLIGHT 2322 - NR 2 BLEED CAUTION ILLUMINATED ON TAXI. TURNED OFF THE BLEED PER THE CHECKLIST AND THE LIGHT STAYED ON. RETURNED TO THE GATE. MAINTENANCE REPLACED THE PRE COOLER OUTLET DUCT (PN 820908-3) AND THE OVERTEMP SWITCH. OPERATIONAL CHECKS GOOD. AIRCRAFT RETURNED TO SERVICE.