P0404 problem not being solved , please help I'm lost

code p0404  The error code P0404 can be defined as Exhaust Gas Recirculation Circuit RangePerformance  I have a 2006 Jetta TDI DSG BRM engine code Have been having a limp mode issue for awhile I bought the car October 2016 it went into limp mode on the drive

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 If your car's ECU throws a P0404 trouble code, you want to fix the issue quickly Here are common symptoms, causes, and how to fix code P0404

Explanation of what a P0404 Exhaust Gas Recirculation Circuit Range Performance engine The code may be thrown due to a clogged cat with too much back pressure anyone here ever encounter that or have any other thoughts?