Evening. My 2002 4.4 l322 suffers from notchy steering from time to time. Would this be the steering angle sensor or the servotronic valve? No faults on the all comms. I do have a fault again on the abs, hdc, dsc and air suspension although I think this is due to a wheel speed sensor. I could understand them being connected if it was the angle sensor but wasn't sure about the servotronic valve?

Could be the rack?

Doesn't do it all the time though