Egr Code p0404-no power and smokes?

The engine code is P0404 which refers to the EGR valve I replaced the valve with all new gaskets as it was rusty and the vehicle is at 194K

Code P0404 means that the EGR Valve Position Sensor is reading above or below the specified range Need help with diagnosing your trouble

code p404 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

code promo mycasino P0404 = Exhaust Gas Recirculation Open Position Performance Sets when the difference between the desired EGR position and the actual EGR position is more than