Volvo V 70 (Bj. 2001) – Engine goes off when starting up

Dear Volvo – experts, last year I changed my V 70 I for a V 70 II (2.4, petrol, automatic) and I was very happy with it. Now I have already done twice: After starting the engine I start and after 5-10 sec. the engine goes off and all warning lights light up. Then the engine can be started again without any problems. Besides, my wife had the situation at the beginning of the year that the Swede went out during the ride. This happened when she was rolling on a red light. After that I had the car tested in a free workshop on heart and kidneys, but they didn’t find anything. They expressed the suspicion that it might be the petrol pump, but they also didn’t want to exchange it so easily. Maybe one of you has another idea? I’m curious! Greeting from the pirate! Manufacturer number (HSN): 9101 Type key number (TSN): 835