2010 Dodge Charger Q&A

2010 Dodge Charger Question: Why is my check engine light on?car is running great.

Had the computer read and it came up maybe a vacuum leak. My gas cap does pop off sometimes. Car is running great. This happened last summer stayed on for a week then went off. Now it came on again and don't know what the problem is. -
Answer 1
probably the gas cap is the problem, without the check engine light code its just guessing. make sure the cap is correctly installed when refueling. -
Comment 1
I think it is something small like the gas cap because when I left the house yesterday the light was off. I have the codes and I'll post them for you when I can. Thanks so much for responding. I was happy to see the light off which makes me think it is nothing serious. :-) -
Answer 2
SCAN CODES AND POST SO WE CAN ADV -
Comment 1
I have the codes I'll post them for you but when I got in my car yesterday the light was off. I was happy which makes me think it is something small like the gas cap. :-) -
Answer 3
Is it the original cap? Have seen some aftermarket's that dont fit so good. Do you know if it had an EVAP code? -
Comment 1
Yes it's the cap that came with the car when I got it. Yesterday when I left the house my light was not on anymore. Weird but in happy. :-) -