Engine-Codes
 
OBDII Code List
 
P0102 CHEVROLET

P0102 CHEVROLET - Mass or Volume Air Flow Circuit Low Input

Repair Importance Level: 3/3
Repair Difficulty Level: 2/3  What does this mean?

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?

    This DTC sets when the Powertrain Control Module (PCM) detects that the Mass Air Flow (MAF) sensor frequency is below a predetermined value.

    Possible symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)
  • Engine stall
  • Engine running rough
  • Excessive fuel consumption
  • Excessive smoke
  • P0102 Chevrolet Description

    The Mass Air Flow (MAF) sensor measures the amount of air ingested by the engine. The direct measurement of the air entering the engine is more accurate than calculating the airflow from the Manifold Absulte Pressure (MAP), the Intake Air Temperature (IAT), and the engine speed (speed/density). The MAF sensor has a battery feed, a ground, and a signal circuit.

    The MAF sensor used on this engine is a hot wire type. This engine uses the MAF sensor in order to measure air flow rate. The MAF output frequency is a function of the power required to keep the air flow sensing elements (hot wires) at a fixed temperature above the ambient temperature. Air flowing through the sensor cools the sensing elements. The amount of cooling is proportional to the amount of air flow. The MAF sensor requires a greater amount of current in order to maintain the hot wires at a constant temperature as the air flow increases. The MAF sensor converts the changes in current draw to a frequency signal read by the Powertrain Control Module (PCM). The PCM calculates the air flow (grams per second) based on this signal.

    The PCM monitors the MAF sensor frequency. The PCM determines if the sensor is stuck low, stuck high, not providing the airflow value expected for a given operating condition, or that the signal appears to be stuck based on a lack of signal variation expected during the normal operation. This diagnostic tests for too low an airflow rate.

    OBDII Code P0102 Chevrolet - Mass or Volume Air Flow Circuit Low Input - Engine-Codes.com

    Related Information

    Repair Importance Level: 3
     
    1=Low 2=Medium 3=High  
    Repair Difficulty Level: 2
     
    1=Easy 2=Moderate 3=Hard  

    Browse All Codes For Specific Model Year

    Ford F150 1998 Ford F150
    1999 Ford F150
    2000 Ford F150
    2001 Ford F150
    2002 Ford F150
    2003 Ford F150
    Ford Fusion 2006 Ford Fusion
    2007 Ford Fusion
    2008 Ford Fusion
    2009 Ford Fusion
    2010 Ford Fusion
    2011 Ford Fusion
    2012 Ford Fusion
    Honda Accord 2008 Honda Accord
    2009 Honda Accord
    2010 Honda Accord
    Honda Civic 1996 Honda Civic
    1997 Honda Civic
    1998 Honda Civic
    1999 Honda Civic
    2000 Honda Civic
    Infiniti G35 2003 Infiniti G35
    2004 Infiniti G35
    2005 Infiniti G35
    2006 Infiniti G35
    Nissan Altima 2002 Nissan Altima
    2003 Nissan Altima
    2004 Nissan Altima
    2005 Nissan Altima
    2006 Nissan Altima
    2008 Nissan Altima
    2009 Nissan Altima
    2010 Nissan Altima
    2011 Nissan Altima
    2012 Nissan Altima
    Nissan Maxima 2005 Nissan Maxima
    2006 Nissan Maxima
    2007 Nissan Maxima
    2008 Nissan Maxima
    Nissan Pathfinder 2005 Nissan Pathfinder
    2006 Nissan Pathfinder
    2007 Nissan Pathfinder
    2008 Nissan Pathfinder
    2009 Nissan Pathfinder
    2010 Nissan Pathfinder
    2011 Nissan Pathfinder
    2012 Nissan Pathfinder
    Nissan Rogue 2008 Nissan Rogue
    2009 Nissan Rogue
    2010 Nissan Rogue
    2011 Nissan Rogue
    2012 Nissan Rogue
    2013 Nissan Rogue
    Nissan Sentra 2002 Nissan Sentra
    2003 Nissan Sentra
    2004 Nissan Sentra
    2005 Nissan Sentra
    2006 Nissan Sentra
    2007 Nissan Sentra
    2008 Nissan Sentra
    2009 Nissan Sentra
    2010 Nissan Sentra
    2011 Nissan Sentra
    2012 Nissan Sentra
    Toyota Camry 1997 Toyota Camry
    1998 Toyota Camry
    1999 Toyota Camry
    2000 Toyota Camry
    2001 Toyota Camry
    2006 Toyota Camry
    2007 Toyota Camry
    2008 Toyota Camry
    2009 Toyota Camry
    2010 Toyota Camry
    2011 Toyota Camry
    Toyota Corolla 2005 Toyota Corolla
    Toyota Highlander 2001 Toyota Highlander
    2002 Toyota Highlander
    2003 Toyota Highlander
    2004 Toyota Highlander
    2005 Toyota Highlander
    2006 Toyota Highlander
    2007 Toyota Highlander
    Toyota Prius 2004 Toyota Prius
    2005 Toyota Prius
    2006 Toyota Prius
    2007 Toyota Prius
    2008 Toyota Prius
    2009 Toyota Prius
    Scion xB 2005 Scion xB
    2006 Scion xB
    2007 Scion xB