Is there anyone who can help me?

Sorry that I open a thread again, I urgently need an AW, since I still want to go home today and do not want to spend the lunch in a workshop, thank you! Hi, today car completely nomrally parked in the parking lot. After the purchase started, light bulb flashes. Car off, then started again, still flashes. Then I drove home and turned off after about 8 km car and no more blinking, car then drove also quite normal. As the fault still was, did not turn on, my opinion also the Turbo, had the feeling that I drive a car with 90 hp. What do you mean, what could the lying down. Diesel filter was changed before about 10000 km. Alas, have still read the code in the cockpit DTC E200 DTC d262 R 206, ER 206 can one with it something start? Or after what else I have to look at? Greeting Epex