Pressure sensor system with protection against freezing medium, comprising: - a pressure sensor element having a flexible plate, wherein the pressure sensor element is formed as a piezo resistive sensor element, - a carrier element on which the pressure sensor element is arranged, - wherein a flow channel for supplying the medium to the flexible plate is provided in the carrier element, - wherein a longitudinal direction of at least one partial section of the flow channel extends vertically below the flexible plate, - wherein the channel cross-section of the at least one partial section of the flow channel is not smaller than the area of the flexible plate at any point within the partial section of the flow channel, - a cavity having a first region and an adjoining second region, - wherein the first and second regions (41, 42) of the cavity extend within the carrier element and are surrounded by an inner wall of the carrier element, - wherein the first region of the cavity tapers in a funnel shape towards the flexible plate of the pressure sensor element, - wherein the at least one partial section of the flow channel is formed by the first region of the cavity, - wherein the second region of the cavity is cylindrical, - a cylindrical compressible element located in the second region of the cavity below the funnel-shaped first region of the cavity, - said compressible element being adapted to be compressed by said medium upon freezing of said medium, - wherein a cross-sectional area of the second region of the cavity is larger than the cross-sectional area of the opening of the funnel-shaped first region of the cavity, - wherein a cross-sectional area of the compressible element is at least as large as the cross-sectional area of the opening of the funnel-shaped first region of the cavity, - wherein the cross-sectional area of the compressible element is smaller than the cross-sectional area of the second region of the cavity. - a pressure sensor element having a flexible plate, wherein the pressure sensor element is formed as a piezo resistive sensor element, - a carrier element on which the pressure sensor element is arranged, - wherein a flow channel for supplying the medium to the flexible plate is provided in the carrier element, - wherein a longitudinal direction of at least one partial section of the flow channel extends vertically below the flexible plate, - wherein the channel cross-section of the at least one partial section of the flow channel is not smaller than the area of the flexible plate at any point within the partial section of the flow channel, - a cavity having a first region and an adjoining second region, - wherein the first and second regions (41, 42) of the cavity extend within the carrier element and are surrounded by an inner wall of the carrier element, - wherein the first region of the cavity tapers in a funnel shape towards the flexible plate of the pressure sensor element, - wherein the at least one partial section of the flow channel is formed by the first region of the cavity, - wherein the second region of the cavity is cylindrical, - a cylindrical compressible element located in the second region of the cavity below the funnel-shaped first region of the cavity, - said compressible element being adapted to be compressed by said medium upon freezing of said medium, - wherein a cross-sectional area of the second region of the cavity is larger than the cross-sectional area of the opening of the funnel-shaped first region of the cavity, - wherein a cross-sectional area of the compressible element is at least as large as the cross-sectional area of the opening of the funnel-shaped first region of the cavity, - wherein the cross-sectional area of the compressible element is smaller than the cross-sectional area of the second region of the cavity.