My 2003 Dodge Neon showed code PO456 the vapor canister was replaced and code went away, and it passed emissions, two weeks have passed, and check engine light is back again showing same code (detected small leak) also P1684 battery disconnected which it is not only five months old and voltage is 12.74 possible bad vacuum hose leak maybe?
Monday, March 27th, 2023 AT 12:44 PM