In this episode of the Bumper to Bumper Radio Show, Dave Riccio and Jon Riggle discuss what happens if there is a car or truck that has a check engine light on but there are no trouble codes stored in the computer. Anytime a car is being looked at for something that is not working right it is imperative to have a well-trained technician diagnose that vehicle. It saves time and money by having it fixed right the first time. Listen in to hear the experiences that both Jon and Dave share when it comes to this kind of diagnosing.