Circuit module, in particular for accommodating a sensor, wherein the circuit module has at least: a main circuit board on which or in which conductor tracks are formed and on which at least component is mounted, an additional carrier which is embodied as an additional circuit board and on which at least one component (6, 6a) is mounted, and a holder for securing the additional carrier at an angular position at or on the main circuit board, wherein at least one component (6, 6a) which is mounted on the additional carrier is placed in electrical contact with the main circuit board, characterized in that at least one conductor track runs in or on the additional circuit board, the main circuit board and the additional circuit board are connected to one another via at least one flexible connecting region and at least one conductor track runs in or on the additional circuit board, through the connecting region and to the main circuit board, wherein the main circuit board and the additional circuit board are manufactured from a common basic circuit board, and the at least one connecting region is formed by at least one upper or lower layer which the main circuit board and the additional circuit board have in common, wherein the additional circuit board is partially exposed from one side in the main circuit board by milling out free spaces and deep milling the at least one connecting region, wherein the holder is fitted onto at least one edge of the main circuit board by means of a translatory mounting process, wherein the holder is mounted on the main circuit board by means of a continuous translatory pushing-in movement in a pushing-in direction and is secured, and the additional circuit board is raised into its vertical position by the pushing-in movement and positioned and secured in the holder, wherein the holder has a bearing face for receiving a front edge of the additional circuit board in a sliding fashion during the pushing-in movement, wherein the holder has two lateral guide grooves for receiving edges of the main circuit board as a guide for the pushing-in movement in the pushing-in direction and for fastening the holder to the main circuit board in the installation position, and wherein the guide grooves extend along the pushing-in direction and receive edges of the main circuit board which form the outer lateral boundary of the free spaces. a main circuit board on which or in which conductor tracks are formed and on which at least component is mounted, an additional carrier which is embodied as an additional circuit board and on which at least one component (6, 6a) is mounted, and a holder for securing the additional carrier at an angular position at or on the main circuit board, wherein at least one component (6, 6a) which is mounted on the additional carrier is placed in electrical contact with the main circuit board, characterized in that at least one conductor track runs in or on the additional circuit board, the main circuit board and the additional circuit board are connected to one another via at least one flexible connecting region and at least one conductor track runs in or on the additional circuit board, through the connecting region and to the main circuit board, wherein the main circuit board and the additional circuit board are manufactured from a common basic circuit board, and the at least one connecting region is formed by at least one upper or lower layer which the main circuit board and the additional circuit board have in common, wherein the additional circuit board is partially exposed from one side in the main circuit board by milling out free spaces and deep milling the at least one connecting region, wherein the holder is fitted onto at least one edge of the main circuit board by means of a translatory mounting process, wherein the holder is mounted on the main circuit board by means of a continuous translatory pushing-in movement in a pushing-in direction and is secured, and the additional circuit board is raised into its vertical position by the pushing-in movement and positioned and secured in the holder, wherein the holder has a bearing face for receiving a front edge of the additional circuit board in a sliding fashion during the pushing-in movement, wherein the holder has two lateral guide grooves for receiving edges of the main circuit board as a guide for the pushing-in movement in the pushing-in direction and for fastening the holder to the main circuit board in the installation position, and wherein the guide grooves extend along the pushing-in direction and receive edges of the main circuit board which form the outer lateral boundary of the free spaces.