and now the TRACTION CONTROL LIGHTblinks on and offand the ABS light stays on. What can I do to clear these codes or whatever?

Congratulations, you (or whoever installed your struts) havemost likelycreated an open circuit in your speed sensor wires. This will not be visible from the outside of the wire, but if you cut away the insulation of the affected sensor, you will find the wire stretched or broken. This happens when removing the strut from the knuckle without disconnecting the speed sensor wire first breaking or stretching the insideof the wire.I hope this helps.