P0404 code after EGR valve swap

P0404 code after EGR valve swap 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 p0404 Explanation of what a P0404 Exhaust Gas Recirculation Circuit Range Performance engine

p0404 P0404 fault code This code refers to the EGR valve and its performance On the code reader it refers to 'A'control circuit Does anybody know

p0404 Had my EGR valve replaced 4 weeks ago on MY15 CC D2 and since then had a check engine light in 3 occasions, fault code P0404 EGR Control Circuit Performance A P0404 code often indicates a potential problem with your car's exhaust gas recirculation system