Method for determining a switching state of a valve, and solenoid valve assembly

A method for determining a switching state of an inlet valve that is actuated by a coil, wherein the method comprises:

• respectively ascertaining a current flowing through the coil and a voltage applied to the coil at several times which follow one another with a prespecified time interval, calculating an inductance variable of the coil based on the currents, the voltage and the time interval,
• determining the switching state based on the inductance variable, and
• monitoring the switching state of the inlet valve by monitoring whether a tappet of the inlet valve falls back to a tappet starting position after the coil is switched off, and without a non-return valve.