The sensors and toothed wheels are just behind the front discs and rear disc/drum. Give them a clean and check for damage. Clearance is between 0.645 and 1.305mm front, 0.06 and 1.18mm rear. There is no adjustment so if they are out they will need replacing.
I was confused with your comment, "It has only for driver". Is this a reference to your airbag?