Power steering fault Citroen c3 Picasso 2010?

Started my car and power steering fault came up. Had to drive to garage 20 mins away. They done diagnostic and trying to reset but they said it did not work and may need new rack!!! Pulled out of garage and it started working ? Bit worried it is going to happen again. Garage said unusual for car that age. I believe this is happening to a lot of people. Must be a manufacturing fault. Citroen should recall them and sort! Anyone experiencing the same?