p0404 egr code caused by bad catalytic???

Some vehicles may store EGR control performance code P0404 This occurs when the difference between commanded and actual EGR valve position is more than 10%

P0404 Code: Symptoms, Causes, and Solution

p0404 Code P0404 usually indicates that there is a carbon build-up somewhere in the lines, or on other occasions, a bad EGR valve

p0404 The P0404 code error comes when the EGR doesn't behave as it should Most of the time, it's because the valve doesn't open Besides the valve