As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LAS - AIR TURN BACK - FLT 372 - DURING CLIMB, CREW RECEIVED GREEN HYDRAULIC LOW RESERVOIR MESSAGE AFTER SHORTLY RAISING GEAR. RETURNED TO LAS AND LANDED WITHOUT FURTHER INCIDENT. AIRCRAFT WAS TOWED BACK TO THE GATE. MAINTENANCE FOUND THE LT LANDING GEAR DOOR ACTUATOR LINE FAILED. REPLACED LINE AND SERVICED SYSTEM. LEAK CHECKS WERE GOOD.