Remove the motor and run the test on that motor only, see if it works or not. Try to rotate the screw when the motor is out, see if it's stuck or not.
And you might have to restart the printer even if you get away with the error.
Many thanks. Please I realised that the white disc on the front left Gear is lower than the one on the front right GearI'm not at the manual now, there is some PPS motor diagnostic that lets you choose the motor.