Hyundai I30 CRDI - errorcode p0404 EGR-Valve Please help :)

What is P0404 Engine Code p0404

P0404 = Exhaust Gas Recirculation Open Position Performance Sets when the difference between the desired EGR position and the actual EGR

p0404 The vehicle lacks of power When I clear the p0404 fault code, the vehicle runs great for a couple of days or miles (costumer mentioned that Watched some YouTube videos about P0404 and I amwas about to performsee if cleaning, or replacing the EGR valve andor gasket would solve the issue  P0404 EGR Valve malfunction #P0404 #EGR_Valve #Fix

สล็อตssc777 It spat out P0404 Exhaust Gas Re-circulation Control Circuit RangePerformance code The EGR has been removed and deleted on the ECU, any ideas what it is