As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CONT CAB TEMP CONTROL FAULT ON MASTER CAUTION RECALL. GROUNDED - YES. C/W TECH SERVICE, REF B737-800 FIM 21-62 TASK 801, PERFORMED BITE TEST AND FOUND TRIM VALVE/FLT DECK FAULT. REMOVED AND REPLACE FLIGHT DECK TEMP SENSOR AND FILTER PRECAUTIONARY REF B737-800 AMM 21-61-10/AMM 21-61-06. INSPECTED EXHAUST BYPASS CHECK VALVE OPS CHECK GOOD NO DEFECTS FOUND.