2002 Mitsubishi Lancer Q&A
2002 Mitsubishi Lancer Question: 2002 Mitsubishi lancer has check engine light on when scanned shows code P0456.
Check fuel cap to see if it is fitting properly. If not, replace. Otherwise, a small leak is being detected somewhere in fuel evap. emission system such as a rusted fuel filler neck or a cracked hose. May need a shop to diagnose or perform a 'smoke test' on the system. - csubak30