As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER ENGINE START AFTER RECALL THE CONT CAB ZONE TEMP LIGHT CAME ON. IT WENT OUT WITH MASTER CAUTION RESET. GROUNDED YES. BITE OF BOTH ZONE TEMP CONTROLLERS SHOW FLT DECK CABIN SENSOR FAULT. FOUND FILTER IN CONTROL CABIN CLOGGED. CLEANED FILTER & GROUND OPS CHECK GOOD REF AMM 21 61 00 & FIM 21 62 TASK 842. SEAMC ETOPS DESK DAVE NOTIFIED.