What is the code for mass airflow sensor?
P0102 is the general code for a problem with the Mass Airflow (MAF) Sensor having a low voltage output to the Engine Control Unit (ECU).
Is the GM mass air flow sensor Dirty?
Since a dirty MAF sensor makes the engine pollute more and produce less power. Alright, enough of the b.s. and let’s get started with the actual step by step cleaning of the GM mass air flow (MAF) sensor (Buick, Chevrolet, Oldsmobile, Pontiac, and GMC models). Remove the mass air flow sensor from the car or truck.
What kind of MAF sensor does GM use?
This type of GM mass air flow (MAF) sensor is used in a lot of GM makes and models, to find out if this article applies to your specific GM (Cadillac, Chevy, Buick, GMC) vehicle, take a look at the list at the bottom of this page. Now, in case this is not the article you’re looking for, there are also 3 other GM MAF sensor test articles:
What does the p0101 code on the MAF sensor mean?
The P0101 code is set when the Powertrain Control Module (PCM) detects that the Mass Air Flow (MAF) sensor frequency is below a predetermined value. P0101 GMC Possible Symptoms. P0101 GMC Meaning. The Mass Air Flow (MAF) sensor measures the amount of air ingested by the engine.
What is the rich code on the GM MAF sensor?
P0102 Mass Air Flow Low Frequency. P0103 Mass Air Flow High Frequency. Lean and/or Rich code (s). Fuel Trim code (s). A tremendous lack of power upon acceleration. Black smoke coming from the tail-pipe. Vehicle may idle rough and stall.
How is mass air flow ( MAF ) sensor used?
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).
What does the MAF sensor on a Buick do?
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 P0101 code is set when the Powertrain Control Module (PCM) detects that the Mass Air Flow (MAF) sensor frequency is below a predetermined value. P0101 GMC Possible Symptoms. P0101 GMC Meaning. The Mass Air Flow (MAF) sensor measures the amount of air ingested by the engine.
What does the code p0102 mean on a MAF sensor?
Mass Airflow (MAF) Circuit Low Voltage Input The code P0102 code is often associated with P0100, P0101, P0103 or P0104 trouble codes as they are closely related. What the P0102 code means P0102 is the general code for a problem with the Mass Airflow (MAF) Sensor having a low voltage output to the Engine Control Unit (ECU).
What causes the MAF sensor range to be low?
The source of the problem is the sensor range voltage is lower than normal or required by the ECU to function properly. The most obvious problem is restricted airflow from the air cleaner to the MAF sensor which can be a clogged air filter.
What causes a p0103 MAF circuit to be high?
Potential causes for this trouble code may include: MAF sensor electrical harness or wiring problem (open, shorted, frayed, poor connection, etc.) Note that other codes may be present if you have a P0103.
What are the codes for mass air flow?
Note: Some MAF sensors also incorporate an air temperature sensor, which is another value used by the PCM for optimal engine operation. Closely related MAF circuit trouble codes include P0100, P0101, P0103, and P0104. Photo of a MAF sensor:
What does p0102 stand for in MAF sensor?
P0102: Mass Air Flow (MAF) Circuit Low Input. P0103: Mass Air Flow (MAF) Circuit High Input. MAF sensor malfunction that DOES NOT light up the check engine light (CEL).
When to test a mass airflow ( MAF ) sensor?
It’s always a good idea to test a Mass Airflow (MAF) sensor before replacing it. Here is a fast and accurate way to track a MAF’s performance and output to the PCM. Connect a scan tool to see the MAF sensor Parameter Identification Data (PID) information.
What does the MAF sensor on a PCM do?
For this, the PCM relies on the mass air flow sensor, among several of the sensors that monitor the engine and transmission. The MAF sensor’s job is to measure the amount of air the engine is breathing at any given RPM.
Can a bad mass air flow sensor trigger a check engine light?
Bad mass air flow sensor with no check engine light? Sometimes a mass airflow sensor can start to fail and even trigger engine error codes such as P0101 and P0102, without triggering a check engine light. There must be a problem with the mass airflow sensor circuit for the check engine light to illuminate.
What causes rough idle after replacing mass air flow sensor?
Replaced air filter and maf sensor. Problems with vehicle turning off seemed to go away but now I have a rough Idle. Car will drop below 1000 rpms and then rev back up to over 1500 like it wants to shut off. Idle problems seem to go away when maf sensor is disconnected. Car throwing codes p0171 and p0102.
How to clean a dirty mass air flow sensor?
How to clean a Dirty mass air flow sensor. Sometimes you may be able to extend the life of the mass air flow sensor by cleaning it. As explained above, the sensor can become covered in grease and dirt and this can affect its performance. In my experience, if the engine is performing very badly, then the sensor may be worn as well as dirty.
How to troubleshoot a mass air flow sensor?
Check the connector for a correct fit and good contact. 2. Check the mass air flow sensor for damage. 3. Check the measuring elements for damage. 4. Check the voltage supply with the ignition switched on (circuit diagram for pin assignment is necessary). Ref. value: 7.5 -14 V. 5.
What is the error code on the MAF sensor?
I checked the error code using OBD2, and the code was P0101. I bought MAF sensor cleaner and a new air filter (the old air filter was very dirty). After cleaning the MAF sensor, I replaced a new air filer.
What was the error code on my air flow sensor?
The error code was P0101. I removed and cleaned the Air Flow Sensor and replaced the engine air filter. Stopped at dealership and they cleared the error code for me at no charge. Very nice of them. It only took a few minutes.
Can a bad air flow sensor trigger a check engine light?
Bad mass air flow sensor with no check engine light? Sometimes a mass airflow sensor can start to fail and even trigger engine error codes such as P0101 and P0102, without triggering a check engine light .