Method for calibrating a position encoder system with a position encoder, wherein the position encoder comprises: -- a drive with an electronically commutated electric motor, -- a movable actuator element, -- a mechanism which couples the drive to the actuator element so that when the drive is actuated, adjustment of the actuator element is brought about; -- a position sensor for sensing a position of the actuator element at the actuator element or in the mechanism and for making available a corresponding position indication for commutating the electric motor of the drive, wherein the method comprises the following steps: - actuating the drive with a first amplitude profile A 1 = a 1 ∗ M(φ), wherein M(φ) is the counter-torque profile known over the distance, wherein a 1 is a first proportionality factor so that a first motor magnetic field which rotates with a predefined circular frequency (ω) is generated, and determining a resultant time profile of first position indication; - actuating the drive with a second amplitude profile A 2 = a 2 ∗ M(φ), different from the first amplitude profile (A 1), where a 2 is a second proportionality factor, so that a second motor magnetic field which rotates with the predefined circular frequency is generated, and determining a resulting time profile of second position indications, wherein the first and second motor magnetic fields are determined in a variable fashion as a function of a rotor-position-dependent opposing force which acts on the actuator element; - determining an angle difference as a difference between the difference angles (φ 1 -φ 2) between the direction of the motor magnetic field and the direction of an exciter magnetic field which is generated by the rotor, on the basis of a time shift of the time profiles of the first and second position indications; - on the basis of the determined angle difference as a difference between the difference angles (φ 1 -φ 2), determining the difference angle φ 1 between the direction of the motor magnetic field and the direction of an exciter magnetic field generated by the rotor for a specific direction of the first motor magnetic field according to the equation sin Φ 1 = a 2 a 1 ⋅ h h 2 + a 2 a 1 − 1 − h 2 2 where h = sin φ 1 − φ 2; - assigning the position indication, sensed for the determined direction of the first motor magnetic field, to a rotor position which corresponds to the determined direction of the first motor magnetic field which is corrected using the determined difference angle φ 1. -- a drive with an electronically commutated electric motor, -- a movable actuator element, -- a mechanism which couples the drive to the actuator element so that when the drive is actuated, adjustment of the actuator element is brought about; -- a position sensor for sensing a position of the actuator element at the actuator element or in the mechanism and for making available a corresponding position indication for commutating the electric motor of the drive, - actuating the drive with a first amplitude profile A 1 = a 1 ∗ M(φ), wherein M(φ) is the counter-torque profile known over the distance, wherein a 1 is a first proportionality factor so that a first motor magnetic field which rotates with a predefined circular frequency (ω) is generated, and determining a resultant time profile of first position indication; - actuating the drive with a second amplitude profile A 2 = a 2 ∗ M(φ), different from the first amplitude profile (A 1), where a 2 is a second proportionality factor, so that a second motor magnetic field which rotates with the predefined circular frequency is generated, and determining a resulting time profile of second position indications, wherein the first and second motor magnetic fields are determined in a variable fashion as a function of a rotor-position-dependent opposing force which acts on the actuator element; - determining an angle difference as a difference between the difference angles (φ 1 -φ 2) between the direction of the motor magnetic field and the direction of an exciter magnetic field which is generated by the rotor, on the basis of a time shift of the time profiles of the first and second position indications; - on the basis of the determined angle difference as a difference between the difference angles (φ 1 -φ 2), determining the difference angle φ 1 between the direction of the motor magnetic field and the direction of an exciter magnetic field generated by the rotor for a specific direction of the first motor magnetic field according to the equation sin Φ 1 = a 2 a 1 ⋅ h h 2 + a 2 a 1 − 1 − h 2 2 where h = sin φ 1 − φ 2; - assigning the position indication, sensed for the determined direction of the first motor magnetic field, to a rotor position which corresponds to the determined direction of the first motor magnetic field which is corrected using the determined difference angle φ 1.