Engine Code P0441

Hello. New to site and looks great. Recently purchased a 1996 Cutlass Supreme 3100 (3.1) V6 with 131000 miles. Service Engine Soon light came on after 60 miles or so of driving. Using my code scanner I checked and and got two codes both P0441. I reset the codes and 60 miles later it came back. After looking around in the engine compartment I found a small hose had fallen of a round plastic piece at the rear of the compartment. The hose runs up to the front of the engine and is connected to something under the intake. Went ahead and reset the codes again. About 250 miles later the same p0441 code came up. Never had any real emmisions control issues and such with any of my cars in the past other than a cat or muffler so this is kinda new to me. Any suggestions on where to start looking are greatly appriciated. Thanks.