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 ILLUM ON PUSH BACK. GROUNDED - YES. RELEASED PER MEL 21-21G. FLIGHT DECK PRIMARY TEMP CONTROL INOPERATIVE. PERFORMED B737-900 FIM 21-62 TASK 801. BITE TEST PASSED. CONT CABIN LIGHT REMAIN EXTINGUISHED ON RECALL.