How to Diagnose Codes P0440 or P0455 Using Visual Inspection

Sometimes EVAP codes can be tricky to diagnose. After determining what codes the vehicle has its recommended to perform a good visual inspection. Especially since a majority of the evap components are connected with plastic and rubber lines. We quickly found the large evap leak on the Volvo in this video by just doing a good visual inspection. Its not always that easy but in some cases pays off.