P0102 Chevy Silverado. Causes and remedies

When you see the engine light come on in your Chevy Silverado, it can be a little scary. You don’t know what’s wrong, and you don’t know how much it will cost to fix.

In this article, we will discuss the P0102, specifically what it is and how to fix it. Many people think that this is a serious problem, but in many cases it is very easy to correct.

What does the p0102 code on a Chevy Silverado mean?

Code P0102 Chevy Silverado is a very common trouble code. This means the Mass Air Flow (MAF) sensor circuit is low. The MAF sensor measures the amount of air entering the motor. If it detects that there is not enough air, it will turn on the check motor glow.

When your Chevy shows this code, it means there is a problem with the MAF sensor or its wiring harness. In most cases, it’s just a matter of cleaning the sensor or replaced a faulty wiring.

P0102 chevy silverado: detailed fix instructions from 2022

How to read code P0102 Chevy Silverado

When your Chevy check engine light comes on, it stores a code in the computer. This code can be read by a mechanic with a special scanner.

Alternatively, you can take your truck to an auto parts store and they can read the code for free.

When do I need to fix DTC p0102 Chevy Silverado?

DTC P0102 is set when low air flow is detected by the MAF sensor. When this happens, you need to know how to fix DTC P0102?

Troubleshooting P0102

Once you receive the code, you can begin to troubleshoot the issue. The first thing you should do is check all the wires to the faulty MAF sensor. Make sure there are no loose connections or broken wiring.

If everything looks good, then the next step is to clean the sensor.

To do this, you can buy a special cleaning spray, or you can just use a can of compressed air filter. Just make sure you don’t damage the sensor in the process.

If cleaning the sensor does not help, it must be replaced. MAF sensors are not very expensive, and they are easy to replace yourself. Just make sure you get the right one for your truck.

Chevrolet Silverado P0102 causes

Here are the most common causes of P0102 in a Chevy Silverado. They are presented in no particular order, in order from most likely to least likely:

MAF sensor dirty. Over the course of its service life, the MAF sensor often becomes so covered in dirt that it no longer gives an accurate reading. They can be cleaned but are easy to mess up and you don’t need to use a wire brush.

Here is a great article on exactly how to clean it from Family Handyman. Cleaning the MAF Sensor.

Failure of the MAF sensor. While it’s highly likely that the problem could be with the MAF sensor itself, it’s absolutely essential to check it before replace it.

Here’s a video on how to test one without pulling it.

This is important for two reasons. First, they are expensive. Secondly, it only takes a few minutes to test with a multimeter. Please make sure it is correct for your Silverado model year before purchasing.

Intake manifold/vacuum leak. If there is a vacuum leak in the intake manifold, the MAF sensor will not be able to get an accurate reading. Without knowing how much air filter is actually getting into the motor, a P0102 code will be thrown.

MAF sensor wiring. Be sure to check the MAF sensor for open or short circuits. Start by inspecting the wiring harness for obvious damage. If you don’t see anything, you can use a multimeter to check the wiring.

At this point, if you’re using the YouTube video above in the section on MAF sensor fouling, and it turns out, there’s no tension at all, try checking out how to find a short in the mains on most BackYardMechanic vehicles.

Clogged catalytic converter. If you’re getting a P0102 code in your Silverado accompanied by a noticeable lack of power at speed, it could very well be that you have a clogged catalytic converter.

P0102 symptoms: Chevrolet Silverado

Because P0102 is related to the MAF sensor, which is an important part of measuring the combustion process in a Silverado motor, it will cause noticeable symptoms.

Usually one or more of these symptoms occur, but it is not uncommon for there to be no other symptoms other than the check engine light.

Symptoms of P102 include:

  • The service engine will light up soon;
  • Bad idle;
  • Delay;
  • Heavy starts;
  • Poor performance;
  • Incorrect air/fuel mixture.

The service engine will light up soon.

When the service motor light comes on shortly, it means there is a problem with your truck. You should take it to a mechanic for inspection as soon as possible.

In some cases, a P0102 will soon light up a service engine. If this happens, you should take your truck to a mechanic and have it checked.

You may also be interested in: What Does P1689 Code Mean and How To Fix?

Poor idle quality

When your truck is not idling well, it could be a sign of P0102. You may notice that the engine shakes or stalls. These are both signs that something is wrong with the Mass Air Flow sensor.


Stopping is another common symptom of a P0102 code. If your truck is stalling, it could be because the MAF sensor is not working properly. This can be a serious issue, which is why you should get your truck to a mechanic as soon as possible.

Heavy starts

If your truck is having trouble code starting, it could be related to P0102. When the MAF sensor cleaner is not working properly, it can cause the engine to start hard.

Poor performance

When your truck isn’t working as it should, it could be related to P0102. When the air intake sensor is not working properly, it can lead to poor engine performance.

Incorrect air/fuel mixture

When the air intake sensor does not work properly, it can lead to a malfunction in the air-fuel mixture. This can result in reduced performance and fuel economy.

What happens if you don’t fix code P0102?

If you do not correct the P0102 code, it may result in reduced performance and fuel economy. In some cases, this can also cause the engine to stall or be difficult to start. Additionally, P0102 can also cause the check engine light to come on. Therefore, it is always better to fix the code as soon as possible.

How much does it cost to fix a p0102 code?

The cost to fix a P0102 code will depend on the cause of the problem. In most cases, this will be a simple fix, such as cleaning or replacing the MAF sensor. However, if the computer itself is to blame, then it can be a bit more expensive to repair.

What does p0102 mean on a Mass Air Flow sensor?

MAF low voltage input Code P0102 is often associated with trouble codes P0100, P0101, P0103, or P0104 because they are closely related. This means P0102 code is a general problem code for a MAF sensor that has a low voltage output from the engine control unit (ECU).

What does the O2 sensor code p0154 mean?

Code P0154 is set when your vehicle’s O2 mass airflow sensor (bank 2, sensor 1) is faulty. The engine control module (ECM) detects that the oxygen sensor (O2) is at rest and does not accurately determine the amount of oxygen in the exhaust gases.

This error in the oxygen MAF sensor dirty causes the ECM to misread the amount of oxygen and fuel coming through the exhaust, preventing it from delivering the optimum fuel ratio.

How to fix code P0154?

With a P0154 code, the first step is to properly diagnose it to find out what is causing the malfunction in the oxygen sensor system. Using the sensor live data function and the FIXD application allows you to read and analyze engine data to correctly diagnose code P0154.

If all gauges show correct readings, check for leaks in vacuum lines and exhaust system. If any of these conditions exist, and you are not comfortable doing further diagnosis of this problem at home, we recommend finding a RepairPal certified store to pinpoint the problem and provide an accurate repair cost estimate.

Not only can these shops help you figure out what’s going wrong before you waste time and money on the wrong parts, but they also offer a minimum 12-month, 12,000-mile warranty and back up all their assessments with guaranteed fair prices.


Code P0102 is a very common code that can be caused by a number of different things. The most common causes are a dirty or faulty MAF sensor, a faulty oxygen sensor, or a problem with the computer itself.

The best way to fix code P0102 is to clean or replace the Mass Air Flow MAF sensor. If that doesn’t work, you will need to take your truck to a mechanic for further diagnosis.

We hope this article was helpful and informative. If you have any questions, feel free to leave them in the comments below. And if you need help troubleshooting your truck, be sure to check out our other articles.

Similar Posts