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How do you clear up a EGR Flow Malfunction P0400 code on a 2001 Madza Millenia 2.5 eng to pass emissions?
Wiki User
∙ 16y ago
Clean the throttle body and the two ports at the bottom. There are 2 ports that allows exhaust gases to recycle to the intake manifold. These often get clogged and cause a p0400 code. It it does not work try cleaning the egr valve and connecting pipes. They may be clogged also.
Wiki User
∙ 16y ago
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