Replacing my mass airflow sensor seems to have worked. Car ran normally last night and again this morning so I might drive it later today. However, when I started the car this morning the tire pressure warning came on again. I checked my problematic left front tire and it read 28psi, which I didn't feel was low enough to trigger the warning. I went around the car checking each one. When I came to the right rear tire however, it read 14psi and was actually giving when I pressed my thumb into it. The tire pressure sensor never came on last night so it seems to have lost at the very very least 5.0+psi overnight.