P0404 code - serious?

P0404 Code p0404

Mazda6 - P0404 keeps returning even with new EGR - Had a P0404 fault code

p0404 P0404 code repair Code 404 is for a problem with the EGR valve circuit The valve may be open or closed when it should not be  For most makes and models of vehicles, a trouble code P0404 is the result of an improper reading from your exhaust gas recirculation valve  EGR code P0404 · When Monitored: Engine running · Set Condition: The EGR flow or valve movement is not what is expected A rationality error

เครดิตฟรี เคยฝากรับ 120 ไม่เคยฝากรับ 100 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