Question about Hyundai Motor 2002 Sonata

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PO102 ERROR CODE

WHAT WOULD CAUSE A PO102 ERROR CODE BESIDES A FAULTY MASS AIR FLOW SENSOR? THE CAR WANTS TO STALL WHEN ITS COLD . WHEN IT WARMS UP ITS BETTER

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  • billium Nov 04, 2008

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Cars are not my expertice but the code indicates low MAF voltage or closed throttle. Check all the connecting tubes for holes or disconnected hoses, anything that will affect airflow to the MAF

Posted on Nov 02, 2008

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You may have an issue with the idle speed control system being dirty, this could cause a lower than expected air flow through the MAF and trigger a code, P0102 is low MAF sensor voltage, I would suggest you clean the MAF and the throttle valve as well as the idle speed control air-bypass valve, to clean the intake and idle valve buy some carb spray or throttle body cleaner, with the engine at high idle spray directly into the intake until you have used about 1/2 the can, then shut the engine down for 10 minutes, restart and clear out any remaining cleaner, drive the car at least a couple of days to let computer relearn new idle strategy and that should cure the problem.

Posted on Nov 03, 2008

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1997 gmc sierra fix the code po102


code po102 refers to mass air flow(MAF) sensor/volume air flow (VAF) sensor---low input======causes --wiring short to ground---MAF/VAF sensor ---ECM

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What does code po102 mean ?


code p0102 refers to mass air flow(MAF) sensor/ volume air flow(VAF) sensor --low input===causes--wiring short to ground--MAF/VAF sensor/s--ECM

clean or replace the MAF/VAF senspr

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Gm trouble codes explained


code p0102 refers to mass air flow(MAF) sensor /volume air flow (VAF) sensor -low input. Causes ---wiring short to ground --MAF/VAF sensor ---ECM.

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2000 nissan sentra 2.0 error codes p0101& p0102


P0102 - Mass Air Flow Sensor Circuit Malfunction

The mass air flownissan-maxima-maf-sensor.jpg or MAF sensor is placed in the intake air duct between the air filter and the engine intake manifold. The MAF sensor measures the amount of intake air flow. The MAF sensor converts the air flow measurement into a voltage or frequency signal, with the voltage or frequency changing proportionally to the amount of air flow. The air flow sensor signal is monitored by the engine computer (ECM). The engine computer (ECM) uses the mass air flow signal to know the engine load and to calculate the proper amount of fuel injected. If the signal from the mass air flow sensor is out of expected range, the ECM detects a fault and sets the code P0100. For example, the mass air flow sensor signal could be higher than expected when the engine is not running or lower than expected with the engine running. A car with the code P0100 may have some driveability issues, such as stalling, lack of power, surging, hesitation, etc. In some cars, the code P0100 can cause the fail-safe mode where the engine speed would be limited to 2,500 - 3,000 rpm.
If there are other trouble codes present, they might need to be looked at first. Checking the freeze frame may help, as it may contain some important information. The freeze frame is a snapshot of the engine parameters at the moment when the fault was detected. The freeze-frame may show whether the vehicle was running or stopped, whether the air-fuel ratio was lean or rich, was the engine was cold or warmed up at the time of the malfunction. Read more about the freeze frame.


Read more about mass air flow sensor.

What could cause the code P0100:
- faulty or contaminated mass air flow sensor
- open or short in the mass air flow sensor electrical circuit
- open or short in the sensor power or ground circuit

- other electrical problem with the MAF sensor wiring, (corroded wires, bent terminals, bad ground connection, burned fuse, etc.
- vacuum leaks
- restricted air flow at or before the air filter
- wrong air flow sensor installed
- problem with ECM





P0102 - Mass Air Flow Sensor Circuit Low

The mass air flow or MAF sensor measures the amount of air entering the engine. The engine computer (ECM) uses the mass air flow signal to calculate the amount of fuel injected (read more how the MAF sensor works below). The code P0102 is set when the signal from the mass air flow sensor is lower than expected. Often a car may exhibit some driveability symptoms, such as lack of power, surging, hesitation on acceleration, hard starting, pinging (detonation), or rough idle when started cold. Often the codes P0171 or P0174 could also be stored along with the code P0102, as the incorrect air flow signal can cause the engine to run lean. The codes P0171 and P0174 indicate a lean condition. Checking the freeze frame might help in the diagnostic process. The freeze frame is stored in the ECM along with the trouble code. The freeze frame contains some recorded parameters (e.g. vehicle speed, engine temperature, fuel trim) at the moment when the fault was detected. The freeze frame can also be accessed with a scan tool.



What could cause the code P0102
- faulty or contaminated mass airflow sensor
- debris blocking the air flow at the mass air flow sensor
- unmetered air leaking past the MAF sensor (vacuum leaks)
- PCV system vacuum leaks
- restricted or collapsed intake air duct
- dirty or restricted air filter
- restricted air screen before the air filter
- improper application of aftermarket components (e.g. cold intake, modified air filter, etc.)
- wrong air flow sensor installed
- electrical problem with the MAF sensor wiring, connector, power supply or ground.
- problem with ECM
- in some cases other issues with the fuel injection system like a clogged catalytic converter or a faulty manifold absolute pressure sensor (MAP) can also cause the code P0102.




Solution for MAF repair

Oct 20, 2012 | 2006 Kia Sorento

1 Answer

Spare part 12(po100)


P0100 NISSAN - Mass Air Flow Sensor Circuit Range/Performance Error

Possible causes- Dirty mass air flow sensor
- Dirty mass air filter
- Mass air flow sensor harness is open or shorted
- Mass air flow sensor electrical circuit poor connection
- Intake air leaks
- Faulty mass air flow sensor
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.

Sep 25, 2012 | 1997 Nissan Pickup

1 Answer

I got the code from the OBD IT read a code of 23 and one of 36 now i need to find what it means


code 23 is MAT too low.(mass air temp.) code 36 is Mass Air Flow Sensor Error

The ECM receives a signal from the Mass Air Flow sensor depending on the amount of air entering the engine. The ECM uses information from this sensor to help calculate fuel delivery and spark timing.

Fault Code Description

  • 36 - Mass Air Flow sensor error

    Symptoms

    • Engine stalling
    • Lack of power

    Common Problems Faulty Mass Air Flow sensor,Broken wire to Mass Air Flow sensor,Dirty sensing element in Mass Air Flow sensor

      May 17, 2011 | Pontiac Bonneville Cars & Trucks

      3 Answers

      Diagnostic trouble codes dtc po420 po102


      CODE PO102 IS MAF SENSOR CIRCUIT LOW FREQUENCY CONDITIONS / CODE PO420 IS CATALYST SYSTEM LOW EFFICIENCY BANK 1 CONDITIONS. BAD MASS AIR FLOW SENSOR WILL AFFECT CONTAMINATE DAMAGE CATALYTIC CONVERTER DUE TO RICH EXHAUST EMISSIONS.

      Jan 26, 2011 | 1997 GMC Jimmy

      2 Answers

      Want to know engine light p0102 code means


      P0102 is the generic DTC (Data Trouble Code) for (Mass or Volume Air Flow Circuit Low Input), and it would most likely be a fault with the MAF (Mass Air Flow) sensor.

      The MAF sensor could be dirty or faulty, and there might even be restricted air flow to the MAF sensor (like a plugged up air filter). Also be sure that there are no air or vacuum leaks in the air induction system especially between the MAF sensor and the throttle body and that the hose clamps on the air induction system are all tight.

      Jun 08, 2010 | 2001 Chevrolet Venture

      1 Answer

      Po102 mass or volume air flow circuit low input


      did it have the same code before you change the 02 sensor .cause it should of been po135 for an 02 sensor 1 bank .the mass is the one in the air breather

      Feb 16, 2009 | 1996 Volkswagen Jetta

      2 Answers

      CODE PO102


      sounds like the mass air flow sensor. It is in the intake line squareish part with 2 tamper [proof torque screws.

      Nov 12, 2008 | 2002 Pontiac Grand Prix

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