Password Reset Code
is a series of number and letter in a form of security code that Facebook sent to an email of a Facebook user every time this user forgot password and goes into recovery process to recover password.
When a Facebook user encounter login problems, the user resort to a self-service password reset offers by Facebook in a form of " forgot my password " link.
The password recovery takes minutes to accomplish by going into answering of security questions and at the end of the process a password reset code is being sent to the email of the user and this code is copied and enter into verification box to successfully reset a Facebook password.