Ck engine light on--Ran a scan from Autozone-came back with a PO 456 code---leak

What is your question?

Car still running smooth but ck engine light is still on after 2 months & 2 mechanics

What makes this problem better or worse?

It's the same with no problems except the ck engine light being on

How long has your 2013 Dodge Charger had this problem?

2 months