Warning Lights

First off I have a 2010 with about 11,000 miles and it has been running great since I got it. This morning I was greeted with the "Yellow triangle" and the "check hybrid system warning". The car started fine and I pulled out of the garage under battery as usual and then the engine kicked in also as usual, everything seemed normal except for the warning lights. Since I have a long commute I just took my wifes car and got to work and did a forum search on this issue. I called my wife and had her turn the car on and off three times and she said it cleared the yellow triangle and check hybrid system but it still had the check engine light on. She also said the car seemed to be running fine and shes driving around town in it. I couldn't find anything on the check engine light so anyone have any suggestions? Is it ok to drive it? Thanks to all for any help or advice you can give.

 

Update. I had my wife check the gas cap and it wasn't on all the way, once she closed it properly the check engine light went off. I'm not sure if this was all related but it does make me a bit nervous. As of now the car is back to running great. Fingers crossed....