How to Fix a p0404 Code

How to Fix a p0404 Code p0404 P0404 EGR Valve malfunction #P0404 #EGR_Valve #Fix p0404 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

p0404 I bought a Puma unlock code for my Nanocom and plugged it in yesterday and I am getting the fault code CODE: P0404 Exhaust gas

p0404 The error code P0404 can be defined as Exhaust Gas Recirculation Circuit RangePerformance Featured Products  Code P0404 usually indicates that there is a carbon build-up somewhere in the lines, or on other occasions, a bad EGR valve