po102 chevy

P0102 Chevy Silverado (Main Causes & Possible Fixes)

What does a P0102 error code mean on a Chevy Silverado? If this is a question you have been asking then this article is the right one for you so stick around. We are going to be looking into the cause of this error message and how you can get rid of it.

In short, the P0102 code is an indication that there is something wrong with your Mass Airflow Sensor (MAF Sensor. It can be caused by damaged terminals, low voltage, dirt or carbon build-up, a dirty air filter, or a faulty MAF sensor.

What is a P0102 Code on a Chevy Silverado?

You are driving your Silverado and notice that it starts being jerky with very little power output regardless of the pressure you put on the throttle. When your mechanic runs diagnostics, they get the P0102 code. When you see this code, it means that there is something wrong with your Mass Airflow sensor.

This sensor is responsible for regulating the amount of air that is released into your engine. When you press on the throttle, more air should be released into the engine for the combustion process. If the sensor is impeded in one way or another from regulating the right amount of air into the engine, the result will be reduced power output.

What Can Cause a P0102 code?

So, what exactly causes the code? Well, there are several possible causes and if you want to solve the problem, you need to check through all of these possible causes. The first possible cause is low voltage going to the MAF sensor.

What happens is that when you press the accelerator pedal, the MAF works with the throttle position sensor to regulate how much gas and air is released into the engine.

When the voltage being sent to the MAF sensor is too low, the sensor will send inadequate amounts of air into the combustion chamber leading to low power as the air/gas mix will be disproportionate.

This scenario actually leads to poor fuel economy.

The next possible cause is a faulty MAF sensor. When the sensor is faulty and not working as it should, the results are pretty obvious. In such a scenario, the sensor needs to be replaced immediately.

A dirty air filter will also lead to a P0102 code. The air filter is an important part of the whole air intake mechanism and if it is dirty, the air intake is throttled leading to insufficient amounts of air coming in.

A simple test to see whether the air filter is clean is to take it out and hold it against the light. You should be able to see through it. If it is dirty, it needs to be replaced.

Carbon build-up on the MAF Sensor screen is another possible cause of this particular problem. This, in particular, will prevent the sensor from giving accurate readings leading to poor performance and ultimately the P0102 code being shown.

How do I fix code P0102 on a Chevrolet Silverado?

IF you haven’t caught on already, the P0102 code is triggered by insufficient or restricted airflow to the engine. To fix the problem, you will need to repair or replace the part that is the cause of the restriction.

In the most basic of cases, simply cleaning the affected part will enable you to sort the problem out without much effort. In other scenarios, you will need to repair the affected part. The good thing is that all the possible causes can be addressed inexpensively.

How Do you Reset Check Engine Light After Replacing MAF Sensor?

When the P0102 error appears, you will get a check engine light on the dash. If you need to replace the MAF sensor, you will find that the light will not automatically go off. If you do not have the equipment to clear the error code, you will have to do it manually.

This can be easily done through a good old hard reset. In order to do this, simply unhook the positive terminal from your car battery for a minimum of 10 minutes. After that period, hook the battery back up and the code should have cleared.


Simply put, the P0102 error code is a case that throttled or impeded airflow. Just troubleshoot by following the steps described in this article and you should fix the problem in little to no time.

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