As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT PACK TEMP EICAS MESSAGE ON CLIMBOUT. FOLLOWED QRH, MESSAGE CLEARED. PERFORMED LEFT PACK TEMP CONTROLLER BITE PER AMM 21-51-14 FOUND MIX MAINT SENSOR FAULTS. REMOVED ADN REPLACED LH MIX MAINT SENSOR PER AMM 21-61-02 OPS CHECK GOOD.