As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB TO CRUISE ALTITUDE, ECAM PRESENTED AN ADVISORY PAGE FOR NR 1 ENG NAC TEMP AT 200. SELECTED NR 1 BLEED VALVE OFF AND REDUCED POWER ON NR 1 WITH NO CHANGE IN NR 1 NAC TEMP. AFTER THROTTLE WAS REDUCED TO ALMOST IDLE SETTING, NR 1 NAC TEMP FELL TO 190 DEGREES. THROTTLE REMAINED AT IDLE UNTIL SHORT FINAL APPROACH. DURING DESCENT WITH NR 1 AT IDLE, ADVISORY INDICATION WENT AWAY AFTER 10-15 MINUTES. FOUND A SMALL CRACK ON FAN AIR VALVE, FOUND A COUPLE OF SENSE LINES TO BE BAD. REMOVED AND REPLACED FAN AIR VALVE, REMOVED AND REPLACED SENSE LINES AND NACELLE TEMP SENSOR.