How do I fix Error message 016-032

SOURCE: dell laser mfp 1815 dn "scanner locked" message

When you lift the scanner lid look to the left bottom. you should see a green slider button. If you stick your hand in the output tray and get it rigth under the green slider you will find a lever. Move that thing backwards or forwards, that is your unlocker.

SOURCE: Dell MFCP 3115cn Error Message

From what I have read, it has to do with the scanner arm is jammed or locked. You may be able to toggle the plastic slider above the scanner glass near the hinge from the locked position. That didn't work in my case, but if you tear the scanner down, you may be able to free it. Otherwise a new scanner portion may be required.