As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NEW FAN AIR TEMP SENSOR PLACED IN COCKPIT BEHIND FIRST OFFICER`S SEAT. REPLACED FAN AIR TEMP SENSOR ON NR 2 ENG. DURING OPERATIONS CHECK AIR SUPPLY BITE MODULE LIGHT STAYS ON. THE BOX WILL NOT TEST. REMOVED CANNON PLUG FROM NEW FAN AIR SUPPLY TEMP SENSOR & BOX TESTED GOOD. NEED TO REPLACE FAN AIR TEMP SENSOR AGAIN BECAUSE BAD FROM STOCK MR36112-192 ON-OFF-102.