What does a diagnostics code of p0405 typically mean...My check engine light came on shortly after I got gas today and scanned and came back with this code...
EGR problem with flow, you most likely will have to replace the egr valve unless some carbon has plugged up the egr feed passage.
Is that expensive
Depending where you get the part, the range is anywhere from 85 to 158 bucks, then if you can't do it yourself then there is labor to replace it and reset the ECM.
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