Possible causes

– Faulty mass air flow sensor
– Intake air leaks
– Dirty mass air flow sensor
– Dirty mass air filter
– Mass air flow sensor harness is open or shorted
– Mass air flow sensor circuit poor electrical connection

Tech notes

Before replacing the mass air flow sensor, try replacing the air filter and cleaning the air flow sensor with low compress air or mass air flow sensor cleaner. Reset code and drive vehicle. If the code comes back, it may be necessary to replaced the mass air flow sensor.

When is the code detected?

An excessively low voltage from the sensor is sent to Engine Control Module (ECM).

Symptoms

– Engine Light ON (or Service Engine Soon Warning Light)
– Engine stall
– Engine running rough
– Excessive fuel consumption
– Excessive smoke

P0102 Description

The Mass Air Flow (MAF) sensor is placed in the stream of intake air. It measures the intake flow rate by measuring a part of the entire intake flow. It consists of a hot film that is supplied with electric current from the Engine Control Module (ECM).
The temperature of the hot film is controlled by the ECM a certain amount. The heat generated by the hot film is reduced as the intake air flows around it. The more air, the greater the heat loss. Therefore, the ECM must supply more electric current to maintain the temperature of the hot film as air flow increases. The ECM detects the air flow by means of this current change.

P0102 Information for specific makes

P0102 ACURA
P0102 AUDI
P0102 CHRYSLER
P0102 DODGE
P0102 FORD
P0102 HONDA
P0102 HYUNDAI
P0102 INFINITI
P0102 ISUZU
P0102 JEEP
P0102 KIA
P0102 LEXUS
P0102 MAZDA
P0102 MITSUBISHI
P0102 NISSAN
P0102 SCION
P0102 SUBARU
P0102 TOYOTA
P0102 VOLKSWAGEN
P0102 JAGUAR
P0102 OLDSMOBILE
P0102 BUICK
P0102 SATURN
P0102 CADILLAC
P0102 CHEVROLET
P0102 GMC
P0102 PONTIAC
P0102 HUMMER
P0102 LAND-ROVER
P0102 MERCEDES-BENZ