As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
REJECTED TAKEOFF DUE TO BLD 2 OVTEMP WARNING. FOLLOWED BY PACK 2 OVERHEAT. MX PERFORMED C/W VISUAL INSPECTION OF PRE COOLER LINE REGION. NO DISCONNECTED OR DAMAGED COMPONENTS. CLEANED FAN VALVE FILTER AND C/W OPS CHECK I/A/W M/M 36-11-03 AND TASK 36-00-00-700-803-A/500. OPS CHECK GOOD.