The disclosure relates to an arrangement for detecting connection loss at a circuit part which has a capacitive behaviour and is electrically connected to a useful signal source. The disclosure provides an evaluation circuit which is electrically connected to an input node of the circuit part having a capacitive behaviour and detects the pulsed useful signal (UNUTZ), output by the useful signal source, at the input node of the circuit part having a capacitive behaviour and evaluates the signal characteristics in order to detect connection loss.
