Just make sure you check to make sure it fits your year Sentra before purchasing. If you do need one, they are pretty reasonable on Amazon. The second is that it only takes a few minutes to test it with a multimeter. Here’s a video on how to test one without pulling it. MAF Sensor Failure– While it is very likely that the MAF sensor itself could be the problem, it’s absolutely necessary to test it before you replace it.Here’s a great article on exactly how to clean one from Family Handyman. They can be cleaned, but it’s easy to mess one up, and you don’t want to use a wire brush. MAF Sensor Dirty– Over the course of its life, the MAF sensor will often get so covered in grime that it’ll no longer get an accurate reading.They are presented loosely in order from most to least likely: Here are the most common causes of P0101 in the Nissan Sentra. Since P0101 has to do with the Mass Airflow Sensor, which is a huge part of a computer controlled engine’s combustion process metering. The engine’s computer uses this reading to determine the exact amount of fuel that the engine needs for optimal combustion. It measures the air density and volume in between the air filter and the intake manifold. It’s important to understand what the MAF sensor does.
It should be considered a high priority to fix, as the MAF sensor not reading properly can really make an impact on the performance of the vehicle. We will cover exactly what that means and potential fixes for it below. With the Nissan Sentra, P0101 means the the Mass Air Flow (MAF) sensor has a Range/Performance problem.
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