installed my edge cs yesterday and had a code p0401 low egr flow. i cleared it and it came right back. i just bought the truck 3 weeks ago and it has ran flawless, im hoping the previous owner has pluged the egr cooler. is there quick way to find out? also i tried pulling the egr valve but i couldnt get it out and it started to rain so i gave up, any tips on geting it out easier?
I had the same thing happen , bought the truck and a few days later got the 401.
from what ive learned here , theres no way to tell without removing the egr cooler and seeing if its been blocked off.
on mine I found an aftermarket cooler in place of the stock piece. when I need to do my icp ill check into it further
the edge will clear the code for you , but I ended up getting an sct sf3 , which will let you turn off the egr to stop the light from coming on
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