I have a toyota camry 2001 ce and I ran out of gas one day and since then the check engine light came on, I only drove 21,000 miles since I got it at 95,000 miles, I called the dealership and it is going to cost me $400 to get it fixed, I was wondering if there is any cheeper way to get it fixed or even do it myself, can you help me?

Optional Information:
2001 Toyota camry ce dont know

Already Tried:
nothing really