p0404 egr code caused by bad catalytic???

Failure code of P0404 had been recorded I removed the EGR valve and discovered that small pieces of carbon had logded the valve open

P0404 Description: The fault code P0404 indicates that there is an issue with the Exhaust Gas Recirculation control circuit This may cause

code p404 If it is only showing p0404 then that is the signal not being reliable from the egr to the pcm I would firstly fit a blanking plate to the egr

code p0404 This video is to help with troubleshooting P0404 and P0405 EGR codes At the end of the