If everything seems perfect, drive the vehicle for a few minutes, and the sensor should synch and work perfectly.įinally, whenever you have a faulty MAF sensor, the first step is running a diagnostic to establish the cause of the problem. However, if this is not the case, check the engine analyzer or the cold air intake pipes for any fault. When fixing the MAF sensor, having the battery on can easily short circuits the mass airflow sensor, leading to more problems.Īfter fixing the MAF sensor, it takes a few seconds to re-calibrate and work flawlessly. Thus, disconnecting the battery helps you prevent more problems with your engine. Whenever you are working on the sensor, ensure the battery is disconnected as it leads triggers engine error codes such as P0101 and P0102. Also, never plug in the MAF sensor when the vehicle is running as it could damage the engine. What would happen if the airflow sensor is left unplugged? Your vehicle may run with the MAF sensor unplugged, but it will lead to the check engine popping up. Also, disconnect the IAT sensor, and ensure the air cleaner tubes are disconnected from the engine. The disconnection also helps prevent any short circuit of the wires during the process.įirst, one is advised to disconnect the wiring to the harness plug before removing the MAF sensor. Disconnect the battery from the ground cable to ensure no current flows through the vehicle’s electrical cable. It’s essential to disconnect the battery whenever you are replacing a MAF sensor. Do I need to disconnect the battery when changing MAF?
Having the air intake systems clean will eliminate the pain. The key to resolving the problem is a thorough diagnosis and a qualified technician to fix the air filter. When the air intake passages are not transparent or when the air filter is faulty, you could get a check engine light on in the dashboard related to a faulty MAF sensor. Other problems related to Mass airflow senso
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The task is very simple if you have the correct tools and software to do it the right way.
Hence, when some codes are not in sync with the vehicle’s computer, you will have the check engine light showing up again. The codes are an essential tool in helping a technician detect a problem with the MAF sensor. Resetting the car’s computer and ensuring all codes from the sensor are synched with the computer.
The second and the most common problem is replacing the MAF sensor and forgetting to reset the vehicle’s computer. When replacing the sensor, especially at home, most people do not accurately make the replacement, causing the check engine light to appear again. One of the most common causes of check engine popping up after MAF sensor replacement is having a faulty replacement. While most car manufacturers and technicians recommend resetting the vehicle’s computer, most people still believe that something went wrong or they have other issues that didn’t know about. Many people do not seem to know why it is still on and what to do to switch it off.
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