P0102 2012 NISSAN ALTIMA SEDAN - Mass or Volume Air Flow Circuit Low Input
- Dirty Air Filter
- Dirty Mass Air Flow (MAF) Sensor
- Intake air leaks
- Faulty Mass Air Flow (MAF) Sensor
- Mass Air Flow (MAF) Sensor harness is open or shorted
- Mass Air Flow (MAF) Sensor circuit poor electrical connection
Tech notesBefore 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).
- Engine Light ON (or Service Engine Soon Warning Light)
- Engine stall
- Engine running rough
- Excessive fuel consumption
- Excessive smoke
P0102 2012 Nissan Altima Sedan DescriptionThe 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.
Need more help?Get the P0102 2012 Nissan Altima Sedan code diagnosed by a professional: Find a repair shop in your area
P0102 2012 NISSAN ALTIMA SEDAN CommentsHelp us improve AutoCodes.com. Leave a comment below or tell us if the information above help you fix the code. What are the symptoms on your vehicle for the P0102 2012 Nissan Altima Sedan code? Have you replaced any parts?
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