What is P0404 Engine Code

code p0404 Detailed information on troubleshooting and repairing a p0404 automotive trouble code which refers to an EGR circuit range or performance issue Also includes

EGR code P0404 · When Monitored: Engine running · Set Condition: The EGR flow or valve movement is not what is expected A rationality error code p0404 Got the code p0404 up on the dash read and came up with egr, this being the 3rd time I've cleaned it out I went and bought a new one branded