there is one on the back of the block on the passenger side. there is a line with a green cap. follow that line to the solenoid. there is also a vent valve in the back of the car on the passenger side.
when you get the new part, it will be easier to find when you have it in your hand.
p0440 evap system malfuntion it is the evap purge located under rear near fuel tankeasy to find has a few hoses and an electrical connector says fails to hold sufficient vacumn.check all hoses connected to it.my haynes repair manual has some tips you can look at it check the hoses and connection