Posts Tagged: Exhaust Gas Recirculation (EGR) Circuit Range Performance

P0404 code for EGR — What it means and how to fix it

Learn what a P0404 code for EGR means and how to fix the problem A P0404 code is defined as Exhaust Gas Recirculation Circuit Range/Performance; meaning that the EGR valve is performing outside your vehicle’s parameters. More specifically, the P0404 code can mean the valve is closed when it should be open or vice-versa or that the EGR passage is restricted. It’s a generic code that indicates that the engine control module (ECM) has detected that the exhaust gas recirculation isn’t what the ECM expected to see. The EGR system … Read More