While making a right turn from a near-stopped position, the steering wheel became stuck or extremely difficult to turn. The vehicle initially turned right normally, but when I attempted to steer back left/counterclockwise to complete the turn and straighten the vehicle, the steering wheel did not respond as expected. This caused the vehicle to continue in the wrong direction and resulted in a collision. I believe the electronic power steering assist system malfunctioned or failed. My concern is that the power steering assist experienced an overstress condition, causing a loss of power steering assist after the vehicle almost reached a stop and then accelerated again. This put my safety and the safety of others at risk because I was unable to steer the vehicle as intended during a low-speed turning maneuver.