EGR Valve on 2002 Ford Escape

My check engine light came on, and I was told it was my EGR Valve. I got it replaced. How many miles does it take for the computer to reset itself so it can be inspected? And why has my light came back on?

Asked by for the 2002 Ford Escape
#1 where did you get your check engine light checked?
#2 what was the code in the computer
#3 computer wont reset it self.
#4 the light might be back for another fault code or the egr was repalced because that wasnt the problem
1 more answer
I had a similar situation. mine said cylinder misfire on 4- then 5; changed spark plugs, didnt work- changed coil packs- worked for 3 days, then came back on. THEN was told it could be the EGR valve...replaced that too- light is still on. Now we are taking it to dealer to see if it is the catalytic converter (the only 1 out of the 3 that we havent replaced yet, lol)..... You have to have it cleared in between engine lights b/c they wont reset themselves. Is your car still running funny- or is it fine & the light is just on? Mine still ran funny- in fact, now it wont go over 35 mph. But it yours is running fine, take it in & have them clear it for you- then see if it stays off or if it comes back on. You'll have to start there. Good luck!!