As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON CLIMB OUT, THE CREW REPORTED TO MAINTENANCE THE LT AUTO IGNITION REMAINS ILLUMINATED IN FLIGHT. MAINTENANCE REQUEST THE AC RETURN TO DEPARTURE. THE CREW PERFORMED AN AIR-TURN-BACK TO DEPARTURE. MAINTENANCE REPLACED THE LT HIGH PRESSURE SWITCH AND RETURNED THE AC TO SERVICE. (K)