how do you change +or clean the egr? on 1997 Nissan Maxima

failed emissions - cdes p0400+p0300+p0443

by in Peoria, AZ on October 11, 2012
2 answers
ANSWER by on October 11, 2012
there is lot more to the egr code, 400 than just replacing the valve. you need to have it checked to verify. there is a lot more than the valve in the egr system 300 is a random missfire 443 is an evap code. Roy
ANSWER by on October 12, 2012
i agree with mastertech. the egr could be causing code po300 but not the evap,seek a proper diag and est as to not waste time and $