P0455 - 2003 Dodge Grand Caravan

Question

I have a 2003 Dodge Grand Caravan. The PO455 code came on yesterday morning. It has came on in the past, so I bought a gas cap from the Dodge dealer. I reset the code yesterday morning and it ran fine all the rest of the day. The code came on again this morning. Both days the cap seem to be tight. What should I check next?

Answer 1

Hi there,

The best method to locate the leak with this code is to have a smoke test done. Even though you likely have to pay for the smoke test, once the leak is located you could then perform the repair yourself to resolve the issue. This may also be a problem with the leak detection pump on the van.