1999 Honda Accord. Check Engine light came on?

It's not flashing, so I hear that's better than flashing. Thing is I'm broke until next week. I have $100 to spend on this car until next pay.

Are there any good spots that check what my problem is for free?
I did research and Maaco offers a free engine check, but I was wondering how reliable and honest are they and if there are any other auto shops worth looking into.

I'm a 21 year old working college student from San Jose, CA in case location was a needed criteria.

Thanks for your help.

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