Method for checking a variable valve lift control of an internal combustion engine

A device for checking a variable valve lift control of an internal combustion engine, the device comprising:

• a processor programmed to, during operation of the internal combustion engine:
• receive a first signal from a detection device indicating a rotational speed of the internal combustion engine;
• and
• receive a second signal from a measurement device indicating an intake pressure in the intake tract of the internal combustion engine;
• and
• the processor further programmed to, in a defined static behavior of the internal combustion engine, at discrete times:
• define a reference frequency dependent on the rotational speed of the internal combustion engine;
• define a comparison frequency as a non-integral multiple of the reference frequency;
• determine amplitudes of oscillations of the intake pressure at the reference frequency and amplitudes of oscillations of the intake pressure at the comparison frequency;
• and
• evaluate a ratio of the determined amplitudes.