DTC P0102: Mass Airflow Sensor Circuit, Low Input: Condition

WARNING: This page is about a different car, the 2002 Mazda Protege5 and 2002 Mazda Protege. However, it is still accessible from the selected car via links, so may be relevant.

DTC is set when input voltage from Mass Airflow (MAF) sensor is less than .86 volt. This is a continuous monitor. MIL is illuminated when PCM detects malfunction during first drive cycle. Possible causes are:

MAF sensor malfunction.
Open circuit between main relay and MAF sensor.
Open or short circuit between PCM and MAF sensor.