How do I determine if I have a firmware password

Shutdown you Mac, turn it back on holding Option and if it asks for a password before starting loading anything, then you have one. Read this to remove it Set a firmware password on your Mac - Apple Support

Canuck0301 wrote:

My MacBook Pro needs repairs. I have asked to turn off firmware password. I don't think I have one...how do I determine if I have a firmware password?

It would be simple from the Terminal.app, copy&paste:

sudo firmwarepasswd -check

note: your psswd will not echo on screen, type it in anyway to proceed.