As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CONT CAB TEMP CABIN LIGHT ILLUMINATED ON RECALL AND EXTINGUISHED ON RESET. GROUNDED - YES. PERFORMED PZTC BITE IAW B737-800 FIM 21-62 TASK 801. #2 CONTROLLER HAD FLT DECK TRIM VALVE ON BITE, CLEARED GREEN ON VERIFY. PER FIM 21-53 TASK 821, NO FURTHER ACTION REQUIRED.