code p0404 and check light flashing

Troubleshooting Ford Escape P0404 Error Code p0404 Autohex online Help for members only, Vehicle:SANTAFE Model Year:2012 fault code:p0404 p0404 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 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