smart 451 allegedly turbocharger defective

Hello together need a little help Was today with my Smart 451 BJ 2008, 58000 km run in the SC, because my Smart loses power at 130 km/h and goes into the emergency run (runs then only 100 km/h) the vehicle is then shut down and pulled keys, it has full power again. The SC has read out the error memory and error code P0105 came out, according to Smart Center is the turbocharger defective, but I can not imagine. Did my little one go back home lt and hope someone can help me without which I have to pay 1100 euros to the smart center.