What does P1102 mean?

Mass Airflow Sensor in Range But Lower
P1102 is a diagnostic trouble code (DTC) for “Mass Airflow Sensor in Range But Lower Than Expected”. This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation.

How do I reset the mass air flow sensor?

Check if the engine light is still on after the Mass Air Flow Sensor was replaced. The entire system can be reset by unhooking the battery and leaving it unhooked for 10 minutes. Keeping the battery unhooked for longer than 10 minutes won’t hurt anything.

What happens if I unplug my mass airflow sensor?

If you unplug the mass air flow sensor the car will start. If you try to plug it in while it’s running the car will die.