Solutions for the stress and pore pressure are derived due to sudden introduction of a plane strain shear dislocation on a leaky plane in a linear poroelastic, fluid-infiltrated solid. For a leaky plane, , the fluid mass flux is proportional to the difference in pore pressure across the plane requiring that , where is a constant resistance. For and , the expressions for the stress and pore pressure reduce to previous solutions for the limiting cases of a permeable or impermeable plane, respectively. Solutions for the pore pressure and shear stress on and near depend significantly on the ratio of and . For the leaky plane, the shear stress at initially increases from the undrained value, as it does from the impermeable plane, but the peak becomes less prominent as the distance from the dislocation increases. The slope () at for the leaky plane is always equal to that of the impermeable plane for any large but finite . In contrast, the slope for the permeable fault is negative at . The pore pressure on initially increases as it does for the impermeable plane and then decays to zero, but as for the shear stress, the increase becomes less with increasing distance from the dislocation. The rate of increase at is equal to that for the impermeable fault.