In this episode of the Bumper to Bumper Radio Show, Dave Riccio and Jon Riggle discuss one of the most overlooked trouble codes that set the check engine light. Evap Codes (P0455 and P0456) let us know something is wrong with our vehicle's fuel evaporative system. It could be just a bad gas cap or something worse. They are not easy codes to diagnose so it pays to have a repair shop to accurately diagnose and fix the problem. Listen to their discussion and learn how the evap system works and why it is so important!