Understanding and Fixing P0404 EGR Valve Fault Code

Understanding and Fixing P0404 EGR Valve Fault Code p0404 The glow plug light flashes all the time after around 3 mins after you start the van I took it to a garage and they read the fault code which was P0404 EGR p0404 Mazda6 - P0404 keeps returning even with new EGR - Had a P0404 fault code

p0404 P0404 is a EGR circuit code You most likely have an exhaust or intake leak which is why it's running rich Check the engine bay for soot or oil

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 P0404 fault code This code refers to the EGR valve and its performance On the code reader it refers to 'A'control circuit Does anybody know