2001 honda civic lx master power window switch problem with one of the window buttons?

The power button on the drivers side to lower the front passengers window will not work. But the power window switch for the front passenger if you sit on the passenger side will work and lower window. Could this be the master switch problem or a wiring problem. All of the other buttons on the master switch work to lower windows on the rear left and right windows and front drivers window. Of the 4 buttons on the master switch 4 work and 1 does not.

9 times out of ten, its the master switch gone bad, its because it gets the most usage.