Ok I got this code P0440 from autozone today on my 2007 Aspen 4wd 5.7 Liters . I already changed the gas cap and the check engine light came back on. I was doing some research online and I found some information regarding the ESIM ( Evaporative System Integrity Monitor). I wanted to know where this switch is located and if i can just replace this switch without changing the whole canister. Here is the switch I found on ebay.

New Chrysler Dodge Mopar Plymouth Esim Sensor OBDII P0440 Evap Emissions Switch | eBay

Let me know what you guys think. I just reached 102,000 miles and I just paid it off this week so go figure. I had the 100,000 mile warrenty and Its like they have a switch at the dealer that they use to make stuff start going bad. HAHA Well Thanks in advance.

 

yeah thats all u need that is the whole esim give it a shot

 

Cool well thanks for the reply. Do you know if the dealer sells this part by itself or do they try to sell you the whole canister?

 

Sorry I forgot to ask where is this part located. I think I saw it on the drivers side in front of the gas tank. It is a black canister with lines attach to it. Right? Once again thanks for your help.

 

yeah dealer should sale it by itself

 

ok so I changed the ECIM on my truck and the code P0440 is still coming after the computer was cleared by my friend with his scanner. Any ideas?

 

Could it be my purge valve solenoid? Where is that located?

 

under the hood with some vac lines coming out of it. One of the lines is also a possible issue cracked rubber.

 

I found that solenoid but how do you remove those clips? They are white. I was trying to smoke my system but I also couldn't find a port. Any ideas?