Question about 2002 BMW Z3

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2002 z3 bmw - mass air flow sensor???

I have 2002 z3 2.5 lt bmw. It has a cold air intake on it and it has some sort of air flow sensor in it (someone cut a hole in the intake and mounted the air sensor through the top of it. As soon as I plug into the sensor, the car would die. Now the car will start, but it dies (with the sensor not plugged in)...fyi, that's the way it was working before, I drove it for a couple of days that way, it never worked perfect but it did work. Like I said, the sensor was not plugged in. Now the only way it will keep running is when I plug it in.....but as soon as I put it in gear it dies. The guy I bought it from stated it should have a master air flow sensor........could this be the problem???? thanks .....Kevin

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  • Anonymous Mar 30, 2014

    i did a complete car scan with a professional and these codes come up..i would like to know what are the solutions to each of these codes and are some of them diy or professional technician to handle the job.
    CODES:
    A0B2
    A0B5: FAULT ROAD SPEED SIGNAL
    A118: LOT D SPEED SIGNAL IMPLAUSIBLE
    A111: FAULT,ELV EXTERNAL POWERTRAIN
    4F8F: RATIO MONITORING GEAR SHIFT 3-2
    2DEC: POWER MANAGEMENT BATTERY MONITORING
    2E69: KNOCK SENSOR SIGNAL 2
    2D0F AIR MASS FLOW SIGNAL...ANY SOLUTIONS WILL GREATLY BE APPRECIATED...

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Hello There

Having driven many BMW's for the last 15 years, my advice is to remove the cold intake and go back to the factory original, the car runs alot smoother and the fuel economy is much better. the chapest way of doing this is to buy a second hand one from ebay etc as well as buying the original MAF sensor.

Hope this helps, please don't forget to rate me.

Posted on May 20, 2009

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Posted on Jan 02, 2017

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Car runs very well after finding air leak at the air intake tube behind air filter, 2001 BMW Z3 3.0 Roadster with engine light on and codes P0171 and P0174, How do I fix?


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P0101


Here is the definition of the code.

P0101 GMC Description 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 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 acertain 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.
Faulty mass air flow sensor
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- Mass air flow sensor electrical circuit poor connection
Read more: http://engine-codes.com/p0101_gmc.html#ixzz223ibNx6t

Read more: http://engine-codes.com/p0101_gmc.html#ixzz223i9HR3J

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1 Answer

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1 Answer

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Hi

Thanks for using FixYa. The BUICK Regal Mass Air Flow sensor is usually installed in the intake air duct between the air filter and the throttle body mounted on the intake manifold. Also check the throttle body for mass air flow sensors location.
On mass air flow sensors with a sense wire, this wire can become contaminated with dust particles. These particles can be removed with automotive solvents that are safe for the use on mass air flow sensors. Before replacing the mass air flow sensor check for air leaks in the connecting air ducts and intake manifold. These leaks can cause similar symptoms as a malfunctioning mass air flow sensor.

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Please do accept the solution if the issue is resolved or else revert for further assistance.

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