J.casone400

I put in a new egr valve. Can anyone help

tadpole1969

sounds like your egr port is clogged up you need to clean it

Z28KLR

Here's some more info for troubleshooting....

www.obd-codes.com/p0401

ucinn

I posted this in your topic in general tech..hope it helps

J.casone400

Thanks .i notice it comes on then goes off

Drastang

I had same code with my vacuum hoses had become rotted out with age.. wiggle them around if they come out easy or if elbows feel like a dirty sponge replace them all . they lead from your head covers to your intake pipe 2 of them .