The contact owns a 2011 Ford Escape. The contact stated that while driving at various speeds, the power steering assist function failed to operate as needed with the ‘Power Steering Assist Fault’ message displayed on the instrument panel. The contact also stated that the steering wheel was shaking abnormally while in park(P). The contact stated that the vehicle had previously been repaired under NHTSA Campaign Number: 14V284000 (Steering); however, the failure recurred. The vehicle was not repaired. The contact attempted to reach out to the dealer that had performed the recall repair; however, all the calls went to voicemail. The manufacturer was notified of the failure and referred the contact back to the dealer for assistance. The failure mileage was approximately 200,000.