Rosenthal Landmark Honda

My 2007 Civic Hybrid dashboard showed a check engine warning light and I took my car to Landmark Honda service department. I was told that the computer had reported a leak in the cars emission system. After doing the diagnosis, they informed me that no leak was detected. My service advisor told me that my fuel cap was probably not closed correctly and they were able to take care of it. They also did not charge me anything for the service.