Steering wheel sometimes jerks when making sharp turns - DSTC issue?

My 2013 Volvo XC-70 sometimes "jerks" when I turn the steering wheel sharply. This mainly happens when I make a hard right or left turn into a parking lot, driveway, etc. I took my car to the dealership where I originally purchased it, but they could not identify a problem. My husband suggested that I turn the DSTC off to see if this would alleviate the problem and it seems to. The DSTC automatically engages when the car is turned on, so I have to go under "My Car" to click it off.
I would like to know if anyone else has had this problem. If so, is there a sensor or relay or something of that nature that needs to be replaced?
Thank you.