Todd M posted:Need some advice. Check engine light is on in the Fiat 500. I hooked up the OBD reader and even though it did not recognize it as a Fiat, I chose from the list a Mazda, and later chose a Ford Focus. It came back with a fairly generic fault for both, which was that the gas cap was not completely closed. I twisted the cap, and rechecked. The check engine light still comes on and the code still shows in the OBD reader. I disconnected the battery and reconnected it, the check engine light still comes on. The engine sounds fine. Any suggestions?
@Todd M yes do t need to leave. Most car part store has a reader that can help check engine light.