Want to point out something in the reply.... We work on our car and read in this forum too much.. we got our head mixed up with words.

"""But first things first, find out why bulb is inop.fix it, . read the code and post it here ,, Like PA said, getting to it is not a very easy task and be careful when you pry out the switches in the cluster they can brake real easy""" this line lol.

do you think it need time for the valve to take effect? cuz the check engine light only turn on when the egr get turn on >.< - Code 12 Exhaust recirculation system