Volvo v50 stability control maintenance required – reduced engine power

Hello. Dwindle slowly on my Volvo v50 1.6 Diesel BJ 11/2009 80 Kw. After several workshop visits and numerous parts exchange like e.g. turbochargers incl. cables, Dpf, differential pressure sensor incl. cables, alternator, throttle valve, charging pressure sensor, pressure converter as well as the AGR valve.Now again come the errors: exhaust gas return system – exhaust gas pressure too low differential pressure sensor soot particle filter – function faulty charging pressure sensor – signal too low soot particle filter – value unpl ausbile It should be noted that these errors occur sporadically, it seems to me that I am running full throttle or on the mountain roads – conclusion stability control maintenance required – reduced engine power After restart the car runs back to normal. Often 1000 km then only 20 km until the fault or the faults come back and the car enters the emergency run? Can this possibly be due to a cable break or a voltage error from the cable to the differential pressure sensor? o has 190000 km on the speedometer and the service is all done regularly or the additive is filled up. The Dpf and the Turbo is from Polar Parts and the other parts of Skandix. Would be pleased to answer any answers. If there are other threads please link. Thank you in advance.