As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON RECALL CONTROL CABIN LIGHT ILLUMINATED. EXTINGUISHED ON RESET. ACFT GROUNDED. REMOVED AND REPLACED FLIGHT DECK TRIM AIR MODULATING VALVE IAW AMM 21-61-21. PERFORMED BITE CHECK IAW AMM TASK 21-61-00, ALL GREEN, TEST PASSED. NO LEAKS NOTED.