A position sensor system (200) for measuring a position (Z) of a target (220) movable outside a plane (230), the system (200) comprising: a first magnetic sensor (201) and a second magnetic sensor (202) fixedly arranged in said plane (230) and spaced apart by a distance (D); the first respectively second magnetic sensor (201, 202) adapted for measuring at least one first respectively second in-plane magnetic field component (Bu1, Bv1),(Bu2,Bv2) in said plane to obtain at least a first respectively second value; a controller (240) connected to the sensors for obtaining said values, and adapted for determining the out-of-plane position (Z) as a function of the values and of the predefined distance (D). A method (1200) of determining said position.