Diesel# P0404 EGR Circuit RangePerformance #MAF

BRM P0404 Code Help! p0404 I'm getting an intermittent check engine light with a P0404 EGR performance code, but the vehicle is running fine p0404 The vehicle lacks of power When I clear the p0404 fault code, the vehicle runs great for a couple of days or miles (costumer mentioned that

p0404 The engine code is P0404 which refers to the EGR valve I replaced the valve with all new gaskets as it was rusty and the vehicle is at 194K