How to Fix P0404 Engine Code in 3 Minutes [2 DIY Methods Only

A P0404 code often indicates a potential problem with your car's exhaust gas recirculation system

P0404 = Exhaust Gas Recirculation Open Position Performance Sets when the difference between the desired EGR position and the actual EGR

p0404 Code P0404 means that the EGR Valve Position Sensor is reading above or below the specified range Need help with diagnosing your trouble

p0404 I had the code read and it was P0404 and the recommendation is to clean the exhaust gas recirculation valve and all egr ports