Check Engine Light - P0404 : rMechanicAdvice

p0404  Autohex online Help for members only, Vehicle:SANTAFE Model Year:2012 fault code:p0404  I'm getting an intermittent check engine light with a P0404 EGR performance code, but the vehicle is running fine

I'm getting an intermittent check engine light with a P0404 EGR performance code, but the vehicle is running fine  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

Code P0404 usually indicates that there is a carbon build-up somewhere in the lines, or on other occasions, a bad EGR valve  I'm getting an intermittent check engine light with a P0404 EGR performance code, but the vehicle is running fine