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Were is the MAF sensor - Beetle Volkswagen Cars & Trucks

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Maf sensor is located in the section just after your air filter in the intake tube that leads to your throttle body.

Posted on Feb 11, 2012


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2008 jetta will not start after putting new o2 sensors and maf sensor

Was the car starting before you installed the new components? if so reinstall the original MAF sensor and retry. May be a faulty MAF. The O2 sensors will not cause a no start condition, but the MAF will. Also be sure the connections between the MAF and intake are sealed, no other air can be allowed to get in between the MAF and intake.

Jan 25, 2014 | Cars & Trucks

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I have 2003 trailblazer and its runing ruff missing when i put it in drive code p103

p0103 is maf sensor A high input. ( manifold air flow ).
  • Verify that the Mass Air Flow Sensor wiring is connected properly and that there are no broken / frayed wires.
  • Inspect for any air leaks near the MAF sensor.
  • Take the MAF out and clean it using a spray cleaner such as brake cleaner or electrical contact cleaner. Be gentle with the sensor.
  • Check the voltage of the MAF sensor (refer to a repair manual for vehicle specific information)
  • Replace the MAF sensor. you can buy maf sensor cleaner at any auto parts store. follow directions on back of maf sensor cleaner. clean sensor first this may solve problem. good- luck!! do not touch inside of sensor with the straw from the can or anything else, just spray it and let dry, then put back on car.
  • Jun 27, 2011 | Chevrolet TrailBlazer EXT Cars & Trucks

    1 Answer

    Hello, I had my car hooked up to a computer today and the codes P102, P0113, and P111 came up. The engine misses when driving down the road, and the car frequently dies when turning corners and idling. ...

    P0113 Intake Air Temperature (IAT) Circuit High Input Indicates the sensor signal is greater than Self-Test maximum. The IAT sensor maximum is 4.6 volts or -50 C (-58 F). Possible causes are Open circuit in harness, Sensor signal short to power, Damaged Sensor, Improper harness connection, Damaged PCM

    P0102 Mas Air Flow (MAF) Circuit Low Input, The MAF sensor circuit is monitored by the PCM for low air flow (or voltage) input through the comprehensive component monitor (CCM) If during key ON engine running the air flow (or voltage) changes below a minimum calibrated limit, the test fails. Possible causes are MAF sensor disconnected, MAF circuit open to PCM, VPWRopen to MAFsensor, PWR GND open to MAF sensor, MAF RTN cirbuit open to PCM, MAF circuit shorted to GND, Intake air leak (near MAF sensor), A closed throttle indication, Damaged MAF sensor, Damaged PCM.

    Mar 18, 2011 | Buick LeSabre Cars & Trucks

    3 Answers

    Where is the MAF sencor located on 2000 Galant

    in the inlet air pipe from the air filter to the manifold

    Dec 02, 2010 | 2000 Mitsubishi Galant

    1 Answer

    How do you replace the mass air flow sensor i want to do it myself the guy at auto zone said it was easy i have a 2000 impala 3.8

    3.8L Engine To Remove:
    MAF Location 93174g17.gif

    1. Disconnect the battery ground cable.
    2. Remove the fuel injector cover.
    3. Disconnect the mass air flow (MAF) sensor electrical connector.
    4. Remove the MAF sensor mounting screws.
    5. Remove the MAF sensor from the throttle body.
    To Install:
    1. Position the MAF sensor on the throttle body.
    2. Install the MAF sensor mounting screws. Tighten the mounting screws to 27 in lb (3 Nm).
    3. Connect the mass air flow (MAF) sensor electrical connector.
    4. Install the fuel injector cover.
    5. Connect the battery ground cable.
    prev.gif next.gif

    Nov 12, 2010 | 2000 Chevrolet Impala

    2 Answers

    Location of mass air flow sensor on a 2002 pontiac firebird

    It should be along the air intake. A block box about 1 1/2" x 2 1/2" held on by 4 ? screws. Easy to replace, but kind of pricey. They make a product for cleaning them. Try that first. Do not touch the wire resistor that goes into the intake. It's delicate.

    Oct 06, 2010 | Pontiac Firebird Cars & Trucks

    1 Answer

    OBDii code reads 0170 which is a fuel trim malfunction right bank 1998 mercedes c230 where would the MAFsencor be and how do I fix

    The MAF Sensor (Mass Air Flow) is located in the air induction system between the air filter and the throttle body.

    Be certain to inspect very well for any air or vacuum leaks in the air induction system or for any loose hose clamps or fasteners in the air induction system, especially between the MAF Sensor and the throttle body. There can be no un-metered air entering the engine or the engine performance will be effected and the check engine light, or MIL (Malfunction Indicator Light) will come on, and P0170 is only one DTC (Data Trouble Code) that un-metered air can cause.

    Also, be certain to check for any obstuctions on the air velocity grid to the MAF Sensor, or in the air flow to the MAF Sensor such as a plugged up air filter, or something sucked up into the air intake for the air cleaner assembly.

    The MAF Sensor can be removed from the MAF housing and cleaned using carburetor cleaner in a spray can to clean off the fine dust that often builds up on the air velocity sensor part of the MAF Sensor and causes poor performance from the MAF Sensor. (it will require a tamper resistant torx bit, and note the position that the MAF Sensor is positioned in the MAF housing so that it is installed back into the MAF housing properly)

    Then clean off the MAF Sensor with the carburetor spray. (From a spray can only, and do not submerge the MAF sensor in any type of water, cleaner, or solvent, or the MAF Sensor will be damaged)

    If cleaning the MAF Sensor does not solve the problem, then replace the MAF Sensor and be sure to install it with the air velocity grid facing the air filter, and be sure to tighten all the hose clamps or fasteners well.

    Here are a few links to MAF Sensors for that vehicle, and an image to help assist you.

    Replacement MAF- $23.27

    Bosch MAF- $134.95

    Beck Arnley MAF- $295.60


    Jul 09, 2010 | Mercedes-Benz C230 Cars & Trucks

    3 Answers

    I have a ford taurus 02' diagnostic code p0102..wat s wrong

    P0102 OBD-II Trouble Code - Mass Air Flow (MAF) Circuit Low Input

    What does that mean?
    Basically this means that there is a problem with the Mass Air Flow (MAF) sensor or circuit. A more technical description would be that the MAF circuit had lower than expected voltage (air flow). Other MAF sensor circuit DTC trouble codes are P0100, P0101, P0103, and P0104.

    You will likely not notice any serious drivability problems, although there may be symptoms such as a general decrease in power or sluggishness.

    A code P0102 may mean that one or more of the following has happened:
    * The MAF may be disconnected, or a wiring connection may be bad
    * The MAF may be dirty or otherwise contaminated (Note: if you use a reusable oiled air filter, be careful not to apply too much oil or that can contaminate the MAF).
    * The MAF sensor may be faulty
    * The vehicle computer may be faulty (very rare)

    Possible Solutions
    The simplest thing to do is to reset the code and see if it comes back. Then start with the cheapest, easiest repair procedures:
    * Verify that the Mass Air Flow Sensor wiring is connected properly and that there are no broken / frayed wires.
    * Inspect for any air leaks near the MAF sensor.
    * Take the MAF out and clean it using a spray cleaner such as brake cleaner or electrical contact cleaner. Be gentle with the sensor.
    * Check the voltage of the MAF sensor (refer to a repair manual for vehicle specific information)
    * Replace the MAF sensor.

    Hope help with this (remember rated this post).

    May 21, 2010 | 2002 Ford Taurus

    2 Answers

    My 2000 ford focus has codes p0102 and p0113 whats that and what could it be?

    P0102 - Mass Air Flow (MAF) Circuit Low Input
    The MAF sensor circuit is monitored by the PCM for low air flow (or voltage) input through the comprehensive component monitor (CCM). If during key ON engine running the air flow (or voltage) changes below a minimum calibrated limit, the test fails. MAF sensor disconnected
    MAF circuit open to PCM
    VPWR open to MAF sensor
    PWR GND open to MAF sensor
    MAF RTN circuit open to PCM
    MAF circuit shorted to GND
    Intake air leak (near MAF sensor)
    A closed throttle indication [throttle position (TP) sensor system]
    Damaged MAF sensor
    Damaged PCM
    A MAF V PID (MAF PID) reading less than 0.23 volts (Refer to equivalent grams/second chart in GO to Pinpoint Test DC ) in continuous memory or key ON and engine running indicates a hard fault.
    P0113 - Intake Air Temperature (IAT) Circuit High Input Indicates the sensor signal is greater than Self-Test maximum. The IAT sensor maximum is 4.6 volts or -50°C (-58°F). Open circuit in harness
    Sensor signal short to power
    Damaged sensor
    Improper harness connection
    Damaged PCM
    IAT V PID reading greater than 4.6 volts with key ON and engine OFF or during any engine operating mode indicates a hard fault.

    Nov 18, 2009 | 2000 Ford Focus

    3 Answers

    After changing fuel pump 2 days ago on my 97 pontiac gtp. it started idling high (2500rpm) then today after getting code p0102(maf sensor) and codes p0122-p0507-p1441 it died on way home and wont start. is...

    You can test the MAF before replacing. It may be a problem with the circuit itself or just a fluke from another problem that is connected to this sensor.

    There are two basic types of mass airflow sensors: hot wire and hot film. In the first type, a very thin wire (about 0.2 mm thick) is used as the heated element.
    f27-31.gif Components of a hot wire-type mass airflow sensor. Courtesy of Ford Motor Company. The element temperature is set at 100° to 200°C above incoming air temperature. Each time the ignition switch is turned to the off position, the wire is heated to approximately 1,000°C for 1 second to burn off any accumulated dust and contaminants.
    The second type uses a nickel foil sensor, which is kept 75°C above ambient air temperatures. It does not require a burn-off period and therefore is potentially longer lasting than the hot wire type.
    A faulty MAF will cause driveability problems resulting from incorrect ignition timing and improper air/fuel ratios.
    Vane-type MAF Sensors
    A vane-type MAF sensor is found on many import and domestic vehicles with EFI. All intake air must flow through the sensor. Some MAF sensors are called volume air flow meters
    • Begin checking a vane-type MAF sensor by checking the voltage supply wire and the ground wire to the MAF module before checking the sensor voltage signal.
    • Always follow the recommended test procedure in the manufacturer's service manual and use the specifications supplied by the manufacturer.
    • Typically, to test the sensor, a digital multimeter (DMM) is used and set on a DC voltage scale. The negative meter lead is connected to ground and the red lead to the MAF signal wire.
    f_32.44.gif A voltmeter connected to measure the signal from a MAF sensor. Reproduced with permission from Fluke Corporation.
    • Turn on the ignition switch and press the min/max button, if available, on the DMM.
    • Slowly push the MAF vane from the closed to the wide-open position, and allow the vane to slowly return to the closed position.
    f_27.33.gif Move the MAF sensor air vane from open to close to test it. Reproduced with permission from Fluke Corporation.
    • Observe the maximum and minimum voltage readings as the vane was moved.
    • If the minimum voltage signal is zero, there may be an open circuit in the MAF sensor variable resistor.
    • When the voltage signal is not within the manufacturer's specifications, replace the sensor.
    WARNING While pushing the mass air flow sensor vane open and closed, be careful not to mark or damage the vane or sensor housing.
    • Some vehicle manufacturers specify ohmmeter tests for the MAF sensor.
    • With the MAF sensor removed, connect the ohmmeter across the sensor's output and input terminals.
    f_32.45.gif Ohmmeter connections to a MAF sensor. Reprinted with permission.
    • The resistance at these terminals is normally 200 to 600 ohms.
    • Connect the ohmmeter leads to the specified MAF sensor terminals, and move the vane from the fully closed to the fully open position.
    • With each specified meter connection and vane position, the ohmmeter should indicate the specified resistance.
    f_32.46.gif Resistance specifications for a typical MAF sensor with door open and closed. Reprinted with permission.
    • When the ohmmeter leads are connected to the sensor's input and output terminals, the ohmmeter reading should increase smoothly as the sensor vane is opened and closed.
    • To check a vane-type MAF with a lab scope, connect the positive lead to the output signal terminal and the negative scope lead to a good ground.
    • This type MAF should display an analog voltage signal when the engine is accelerated. A defective MAF will have sudden and erratic voltage changes.
    f_32.47.gif The trace of a defective vane-type MAF sensor. Reproduced with permission from Fluke Corporation. Hot-Wire-Type MAF Sensors
    The test procedure for heated resistor and hot-wire MAF sensors varies depending on the vehicle make and year. Always follow the test procedure in the appropriate service manual. A frequency test may be performed on some MAF sensors, such as the AC Delco MAF on some General Motors' products.
    • To check the MAF sensor's voltage signal and frequency, connect a voltmeter across the MAF voltage signal wire and ground wire.
    • Start the engine and observe the voltmeter reading.
    • On some MAF sensors, this reading should be 2.5 volts.
    • Lightly tap the MAF sensor housing with a screwdriver handle and watch the voltmeter pointer.
    • If the pointer fluctuates or the engine misfires, replace the MAF sensor.
    • Some MAF sensors have experienced loose internal connections, which cause erratic voltage signals and engine misfiring and surging.
    • Set the DMM so that it can read the frequency of DC voltage.
    • With it still connected to the signal wire and ground, the meter should read about 30 Hz with the engine idling.
    • Now, increase the engine speed, and record the meter reading at various speeds.
    • Graph the frequency readings. The MAF sensor frequency should increase smoothly and gradually in relation to engine speed.
    • If the MAF sensor frequency reading is erratic, replace the sensor.
    f_32..48.gif Satisfactory and unsatisfactory MAF sensor frequency readings. Reproduced with permission from Fluke Corporation.
    • When a scanner is used to diagnose a General Motors' vehicle, one test mode displays grams per second from the MAF sensor. This mode provides an accurate test of the MAF sensor.
    • The grams per second reading should be 4 to 7 with the engine idling.
    • This reading should gradually increase as the engine speed increases.
    • When the engine speed is constant, the grams-per-second reading should remain constant.
    • If the grams-per-second reading is erratic at a constant engine speed or if this reading varies when the sensor is tapped lightly, the sensor is defective.
    • A MAF sensor fault code may not be present with an erratic grams-per-second reading, but the erratic reading indicates a defective sensor.
    • Frequency-varying types of MAF sensors can be tested with a lab scope.
    • The waveform should appear as a series of square waves.
    f_32.49.gif A normal trace for a frequency-varying MAF sensor. Courtesy of Progressive Diagnostics--WaveFile AutoPro.
    • When the engine speed and intake air flow increases, the frequency of the MAF sensor signals should increase smoothly and proportionately to the change in engine speed.
    • If the MAF or connecting wires is defective, the trace will show an erratic change in frequency.
    f_32.50.gif The trace of a defective frequency-varying MAF sensor. Courtesy of EDGE Diagnostics Systems.

    There is also a
    Mass Air Flow (MAF) Burn-Off Module Operation:
    00375_maf_burn_off_module.jpgA semi-conductor control for an electronic-ignition system.

    Nov 17, 2009 | Pontiac Grand Prix Cars & Trucks

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