What year is your car? It can be right by the throttle body, or right by the coils. It'* a small plastic rectangle box with vacuum lines and a wire plug on it. I assume this is the EVAP purge valve you are talking about.
Got it fixed was the u bend hose attached to the left of the purge seliond was very brittle it broke in half and once i got it off it was cracked around the end of the hose went to orielly'* and got 8 inches hose fixed the problem ses light is finally off