As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ZONE TEMP LIGHT ON RECALL ON AFTER START CHECK. RESET W/MASTER CAUTION. GROUNDED-YES. VERIFIED DISCREPANCY. PERFORMED PZTC BITE, REF B737-900 AMM 21-61-00. FOUND "FLT DECK TRIM VALVE FAULTS" ON NR 2 PZTC. RESET FAULT. GROUND RAN BOTH PACKS, NO FAULTS LOGGED. NO HISTORY IN 30 DAYS.