What is mass or volume airflow A circuit range performance?

The mass airflow (MAF) sensor is a device that is mounted on the air intake. Its job is to measure the density and, therefore, the volume of filtered air that is drawn into the engine. When the PCM perceives the sensor or its circuit is malfunctioning, OBD-II code P0101 is triggered.

What is the OBD code for mass airflow?

Error Code P0101: Mass Airflow Sensor Circuit Range/Performance Problem. The onboard diagnostic (OBD) code P0101 refers specifically to a Mass or Volume Airflow Circuit Range/Performance Problem. In a vehicle, the mass airflow (MAF) sensor measures the amount of air going into the engine through the intake.

When is the mass air flow sensor out of range?

P0101 – Mass Air Flow Sensor Circuit Range/Performance The mass airflow sensor (MAF) measures the amount of air entering the engine. The OBD-II code P0101 is set when the signal from the mass air flow sensor is out of expected range, or in other words, the MAF sensor doesn’t work properly.

How does the PCM calculate the MAF range?

The PCM detects that the actual MAF sensor frequency signal is not within a predetermined expected range of the calculated MAF value. Note: Some MAF sensors also incorporate an air temperature sensor, which is another value used by the PCM for optimal engine operation.

What causes a trouble code on a MAF sensor?

Possible Causes. Potential causes for this trouble code may include: Dirty or contaminated mass air flow sensor. Failed MAF sensor. Intake air leaks. MAF sensor electrical harness or wiring problem (open, shorted, frayed, poor connection, etc.)

What is the mass air flow circuit range?

P0101 NISSAN Mass Air Flow Circuit Range/Performance: Code Meaning, Causes, Symptoms, & Tech Notes P0101 NISSAN | Mass Air Flow Circuit Range/Performance | 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