H22AEX

so I have have a Cel code 12 on my obd1 p13 h22 swap , for some reason it wont go away . my question is if i have a bad EGR valve and i run a block of plate on my IM and set my EGR valve hanging and pluged in will it solve my CEL light ? ive researched this and found out that it works but will it work with a bad egr valve if i plug it in ???