As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 3800: UPON CLIMBOUT, THE NR 1 ENGINE BYPASS INTAKE DOOR WOULD NOT OPEN. AIRCRAFT RETURNED TO FIELD DUE TO EXPECTED ICING CONDITIONS. MAINTENANCE INSPECTED, CLEANED AND LUBED THE BYPASS DOOR ACTUATOR SHAFT. OPERATIONAL CHECKS WERE GOOD AND THE AIRCRAFT WAS RETURNED TO SERVICE.