As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CONT CABIN ZONE TEMP LT ON RECALL AFTER ENGINE START (MAINT TAXI). GROUNDED - YES. #2 PZTC BITE SHOWS FLT DECK TRIM VALVE LT ON BIT/PREV FLT. NO FAULTS ON VERIFY TEST. RESET AFTER BIT REF B737-900 AMM 21-61-00. CABIN TEMP CONT OPS CKS GOOD. REF AMM 21-61-00 NO ZONE LT FOR CONT CABIN-ALL ZONES CK GOOD. ETOPS SIGNIFICANT SYSTEM GROUND VERIFICATION SUCCESSFUL.