P0172 indicates that there is too much gasoline being detected in the exhaust gases exiting the combustion chamber. The ECU uses a number of instruments, such as the mass air flow sensor (MAF), oxygen sensors, and manifold absolute pressure (MAP) to monitor the air-fuel ratio of the engine. Most routinely, the air-fuel ratio will be measured
Dec 5, 2018 ยท HOW TO KNOW IF MAF SENSOR IS BAD. MASS AIR FLOW SENSOR TEST Scanner Used in the video: https://amzn.to/2DTTDuJEngine light is often triggered by bad or dirtP0100 Mass or Volume Air Flow "A" Circuit Malfunction; P0102 Mass or Volume Air Flow "A" Circuit Low Input; P0103 Mass or Volume Air Flow "A" Circuit High Input; P0104 Mass or Volume Air Flow "A" Circuit Intermittent; Photo of a MAF sensor: Symptoms. Symptoms of a P0101 code may include: Malfunction indicator lamp (MIL) illumination (a.k.a
Apr 13, 2022 ยท Step 1 โ Removing Original Sensor. First of all you have to find your Mass Airflow Sensor. The Mass Airflow Sensor is usually enclosed in a hard plastic housing. We need to remove the sensor itself from the housing. In this photo the sensor is old and the screws which hold the MAF sensor unit in the main housing had corroded.9Fg6lIa.