how much will it cost to replace an EGR circuit with the diagnostic code of P040 on 2001 Oldsmobile Alero

The check engine light keeps coming on

Asked by for the 2001 Oldsmobile Alero
your missing a number after the 0. we need that number to help you.

Ok its P0401....thank you!
that is a code for insufficient flow. you need to verify that vacuum and exhaust are getting to the valve before jumping to any conclusions. I would have a shop verify this and give you a pin point reason for the failure.