[mag1964]

My check engine light came on. I had it diagnosed at firestone and was told it was the egr valve. I bought a egr valve and put it on, but the light is still on. I called the dealershio this time and was told that indeed I need a egr vale but also need the passage way clean. Here are trouble codes that read out... p0401 exhaust gas recirculation flow is in sufficent. p0405 exhaust gas recirculation sensor a circuit low and finally p1404 exhaust gas recirculation (egr) valve pintle stuck/open. Has anyone experienced this problem, if so what did you do? Thanks!