P0102 MERCEDES-BENZ code

Code P0102 usually indicates low voltage to the MAF sensor. Check if the sensor itself is dirty.

How do I fix error code P0102?

Zitat von Youtube: You can spray the maf sensor cleaner onto the wire perpendicularly to the ground so that it won't damage the maf sensor reinstall the maf sensor back in the car after it gets dry.

How do you fix mass or volume airflow circuit low input?

Inspect the electrical connector to the MAF to insure it is attached correctly. Disconnect it and then reinstall to insure fresh electrical connection to remove any corrosion on the contacts. Thoroughly inspect for wiring being frayed, damaged, or broken on the connector. Repair or replace as necessary.

What could cause P0102?

What Does Code P0102 Mean? Repair Urgency: Get this code fixed within the next month. Diagnosis: It is important to complete the entire diagnostic process when diagnosing the P0102 code. This DTC can be triggered by a clogged or faulty MAF sensor, corroded/damaged wiring, or even a dirty air filter.

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Can a dirty air filter cause a P0102 code?

The primary reason for a P0102 code is restricted airflow.



This situation is caused by a dirty or clogged air filter. Upon stepping on the gas, the engine needs to ingest a lot of air.

How do I reset my mass airflow sensor?

Upon replacing the Mass Air Flow Sensor, turn on the engine light to ensure it still has its function. You can unhook the battery and leave it unhooked for 10 minutes to completely reset the entire system. The battery will not harm itself if left unhooked for more than 10 minutes.

How do I reset my air intake sensor?

  1. Start engine and warm it up to normal operating temperature.
  2. Turn ignition switch OFF.
  3. Disconnect mass air flow sensor harness connector.
  4. Restart engine and let it idle for at least 5 seconds.
  5. Stop engine and reconnect mass air flow sensor harness connector.
  6. Make sure DTC P0102 is displayed.
  7. Erase the DTC memory.
  8. What causes mass air flow code?

    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.

    What causes low MAF readings?

    A clogged up air filter or plugged catalytic converter can also cause lower air flow sensor readings. Vacuum leaks affect air flow sensor readings too. That’s why mechanics use a known-good sensor to compare the readings.

    What causes mass or volume airflow circuit?

    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.

    Do you need to reset the ECU after replacing MAF sensor?

    yes, i would. especially if the hesitation was happening with the previous MAF. it sounds like the car is still running on the old MAF’s parameters. just disconnect the neg battery cable for at least 1 minute, then re-connect. have your radio code if your radio needs one (it does).

    Where is the mass air flow sensor?

    The mass air flow sensor (MAF) is a key component of the electronic fuel injection system in a car. It is located between the air filter and the engine’s intake manifold. In some cars, the intake air temperature (IAT) sensor is built into the mass air flow sensor.

    How do I fix code P0131?

    What repairs can fix the P0131 code?

    1. Confirm P0131 is present with a scan tool. …
    2. Perform a visual inspection of the bank 1 sensor 1 wiring replacing or repairing any wiring that is found to be faulty.
    3. Check voltage and resistance of bank 1 sensor 1.
    4. If necessary replace the oxygen sensor bank 1 sensor 1 with a new sensor.


    Do you need to reset the ECU after replacing MAF sensor?

    yes, i would. especially if the hesitation was happening with the previous MAF. it sounds like the car is still running on the old MAF’s parameters. just disconnect the neg battery cable for at least 1 minute, then re-connect. have your radio code if your radio needs one (it does).

    Where is the MAF sensor located?

    The mass air flow sensor (MAF) is a key component of the electronic fuel injection system in a car. It is located between the air filter and the engine’s intake manifold. In some cars, the intake air temperature (IAT) sensor is built into the mass air flow sensor.

    How do you check a MAF sensor?

    Zitat von Youtube: Okay engine stopped if your engine stops. That means that it's working correctly. If you disconnect that and your car keeps running your mass airflow your mass airflow sensor is not working properly.

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