As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PDX FLIGHT NR 2455: IN CRUISE, LT DOOR AND RT DOOR LIGHTS CYCLED AMBER. SOUNDED AND FELT LIKE DOORS CYCLED OPEN THEN CLOSED. MAINTENANCE FOUND RT MLG DOOR PROX SENSOR IN 'FAR' CONDITION. ADJUSTED SENSOR TO 'NEAR' PROXIMITY IAW Q400 AMM TASK 32-61-06-830-801. PERFORMED LANDING GEAR EXTENSION SPEED EXCEEDANCE CHECK IAW AM TASK 05-50-32-280-801. OPS CHECK GOOD. NO DEFECTS NOTED. NO PARTS REPLACED. AIRCRAFT RETURNED TO SERVICE.