As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ZONE TEMP ILLUMINATED FOR CONT CAB, IT WENT OUT DURING MASTER CAUTION RESET. GROUNDED-YES. INSPECTED AND FOUND NR 2 PZTC WITH "FLT DECK TRIM VLV " FAULT LOGGED 1 TIME. ACCOMPLISHED PZTC BITE, REF B737-800 AMM 21-61-00. FAULT ABLE TO RESET. GROUND RAN PACKS FOR HH, NO FAULTS RETURNED. CLEANED FLT DECK FILTER.