As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RNO FLIGHT NR 2444: ENG ADAPT HEAT 2 CAUTION LIGHT. AIRCRAFT RETURNED TO GATE. MAINTENANCE REMOVED AND REPLACED NR 2 ENGINE AIR INTAKE WIRE HARNESS FROM WHERE THE HARNESS CONNECTS TO THE INTAKE LIP HEATER TO THE FIREWALL CONNECTOR PLUG 9811-2601. C/W OPS CHECK OF THE ENGINE AIR INTAKE ANTI-ICING SYSTEM PER Q400 AMM 30-21-00-710-801. OPS CHECK GOOD. NO DEFECTS NOTED. AIRCRAFT RETURNED TO SERVICE.