As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PDX - WHILE CLIMBING THROUGH 9,000 - 10,000 FT, CREW RECEIVED A DOOR WARNING FOR THE TYPE 2/3 EMERGENCY EXIT. AIRCRAFT RETURNED TO FIELD. DOOR WARNING WENT GREEN WHILE PASSING THROUGH 6,000 FT. MAINTENANCE INSPECTED AIRCRAFT AND REPLACED THE FORWARD EMERGENCY DOOR PROXIMITY SWITCH. OPERATIONAL CHECK WAS GOOD AND AIRCRAFT WAS RETURNED TO SERVICE.