P0452 2004 Chrysler - town and country fix

Question

I have a 2004 Chrysler Town and Country 3.3 and I have a check engine light that just came on.
The code reader showed po452.
I'm looking for information on what this code means and how to fix the problem.
Thank you in advance.
Bob

Answer 1

P0452 NVLD Pressure switch stuck closed

When you have this code condition the ECM activates the NVLD (Natural vacuum leak detection) the ECM activates the solenoid, if it does not see the NVLD switch open the code is set, this is a straight foward code, this is a failed NVLD solenoid. The location of the NVLD is at the vent side of the evap canister.