So, I got ODB codes that the Mass airflow sensor was bad. I replaced it, and the symptoms went away (no shuddering, stalling, difficulty starting, etc.) I cleared the check engine light, and started driving the car. The light came back on. So, here's my question; if the sensor is good, and I'm still getting the codes/symptoms of it being bad, what else could it be? Bad wiring, or some other connected component?