As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT PACK LIGHT ILLUMINATES DURING RECALL AND EXTINGUISHES WHEN PRESSING MASTER CAUTION RESET. GROUNDED - YES. ACCOMPLISHED PACK/ZONE TEMP CONTROLLER BITE TEST. FOUND FAULT TCV#2. REMOVED AND REPLACED #2 TEMP CONTROL VALVE REF B737-900 AMM 21-51-10. BITE TEST GOOD RAN PACKS LIGHT STAYED EXTINGUISHED.