2011 Toyota Camry

I was stuck in 19 inches of snow and as I was attempting to get my car out my engine light came on, ran a diagnostic and the code P0171, DTC-01 and 02 displayed. After reading these codes do you think I can make these repairs myself if you instruct me on what to do? I’m also a mechanic but have never come across this problem. Thanks, and have a beautiful day! Gary