I found a solution to resolving the infamous code 014 issue that I haven't seen anywhere else.
1) Connect your Roku to your modem via Ethernet connection.
2) Complete setup of Ethernet connection.
3) While Ethernet connection is active, go back and choose the wireless connection option.
4) After choosing the wireless option, choose your network.
5) Input your password.
You should now be connected to your wireless network.
This is only one solution of many. A number of issues may be causing the code 014.
If this solution has been posted somewhere else in the forum, I am sorry for not spotting it earlier and referencing it. If this particular solution isn't working for you, please feel free to ask for more assistance!