Hello.
I have a 2005 T&C and recently the check engine light came on and I took it down to Advance Auto Parts and the following codes came back:
P0452 & P1684
I know what they are separately but together I am not sure. Any help would be appreciated.
Thanks
Melissa

 

They have nothing in common. find your evap switch and replace it. look at a new one so you can find it under the hood. to clear codes remove one battery terminal cable and touch it to the other for about 10 seconds.

Good luck.

 

P1684 means merely that within the last 50 starts, your battery has been disconnected. It will go away by itself.

P0452: Evaporative Emission Control System Pressure Sensor Low Input

 

Yup. Unassociated codes. The P1684 is considered more of a nuisance code than anything else. So much so it will not illuminate the check engine light on it's own.