Impact-Site-Verification: 50758e51-71c0-4b3a-816c-dd3f37b79330

Can You Disable AFM? Scan Tools Unlocked!

Published by Dustin Babich on

Yes, a scan tool can disable afm (active fuel management) on some vehicles. With the right code and program, the pcm (powertrain control module) can be reprogrammed to deactivate the afm system.

Afm, also known as cylinder deactivation, is a technology used in some engines to save fuel by turning off a portion of cylinders when not needed. While this technology can improve fuel economy, it can also cause engine problems and increase repair expenses in the long run.

Fortunately, disabling afm with a scan tool is possible and an effective solution to these problems. In this article, we’ll explore how exactly afm works, how it can affect your vehicle’s engine, and how to disable it using a scan tool.

What Is Afm And How Does It Work?

Afm (active fuel management) is a technology that enables engines to operate on less cylinders. This results in increased fuel efficiency, saving both money and resources. Manufacturers have designed vehicles with afm integration in mind, and make sure that it’s working optimally.

In using a scan tool, a code may be accessed to turn off afm. However, this can also lead to negative consequences that may cause engine damage, which will be costly to remedy. Thus, it’s important to be aware of the benefits and potential risks of disabling afm.

Ultimately, the decision to disable afm should only be made after careful consideration and consultation with a trusted automotive professional.

Reasons To Disable Afm

Afm or active fuel management is a technology that captures and converts energy from fuel consumption. However, there are downsides to afm technology, including increased wear and tear on the engine. Drivers may want to disable afm to avoid these issues.

Disabling afm can also potentially save on fuel economy. With scan tools unlocked, drivers have the ability to disable afm and restore their vehicle’s performance to its full potential.

The Benefits Of Disabling Afm

Disabling afm can improve vehicle performance and power significantly. Engines that have been disabled have been shown to have a longer life span. Recreational vehicle enthusiasts will find that disabling afm makes a significant difference in their vehicle’s capabilities. The benefits of disabling afm take on greater significance when it comes to bulky, heavy vehicles, and those that are used in off-road environments.

READ ALSO  Toyota Tacoma Heads Up Display: Experience the Cutting-Edge Technology!

By eliminating the shift from eight to four cylinders, disabled engines experience less wear and tear. Recreational vehicles that are used in hilly or mountainous regions benefit significantly from disabled afm. The engine is less likely to overheat or experience slips under heavy loads.

When it comes to improving vehicle longevity, performance, and power, consider disabling afm.

How To Disable Afm

Afm or active fuel management is a feature that’s supposed to improve fuel efficiency in a vehicle. However, not everyone is a fan of this feature. Luckily, there’s a way to disable afm using scan tools. There are specific scan tools that work better than others for this purpose, and we’ll recommend some of them.

Keep in mind that disabling afm might affect the vehicle’s computer system, so it’s important to be aware of this. With our step-by-step guide, you’ll be able to easily disable afm and enjoy the improved performance of your vehicle.

The Legality Of Disabling Afm

Disabling afm (active fuel management) in your vehicle is a hot topic in many states. Some wonder whether it is legal to disable afm. Currently, legislation that regulates disabling afm varies from state to state. You could experience potential legal implications if you decide to turn off afm.

It’s important to research the laws governing afm within your state before taking any steps. While it may seem like a simple process, disabling the system could result in costly fines or even warranty issues with your vehicle. Always make sure you understand the laws and potential consequences before making any modifications to your vehicle’s systems.

Frequently Asked Questions On Can You Disable Afm With A Scan Tool

How Do I Know If My Car Has Afm And Why Disable It?

If you own a modern gm car, it has an active fuel management system that activates or deactivates cylinders. Disabling it can improve fuel economy and reduce engine wear.

Can I Disable Afm With A Scan Tool?

Yes, you can. A scan tool is essential to disable afm. It will help you turn the afm off, and you won’t have to deal with some undesirable conditions or check engine lights.

READ ALSO  How Many Quarts of Power Steering Fluid Should You Use?

What Are The Benefits Of Disabling Afm?

Disabling afm can help you save more fuel, increase power, and keep your engine in good shape. Disabling it is a lot cheaper than repairing or replacing the engine. It also eliminates the chances of particular engine problems.

Are There Any Drawbacks To Using A Scan Tool To Disable Afm?

Using a scan tool to disable afm can affect the emissions and fuel economy performance of your car. It can also void your vehicle’s warranty, harm the engine, cause engine vibrations, and trigger check engine light codes.

Is Disabling Afm Necessary For My Car?

It depends on personal preference since disabling afm can harm the engine in the long run. However, if you are looking to squeeze in a few more mpg, disable it. Otherwise, it is not necessary to disable afm.


Disabling the afm system with a scan tool is not a complex process. It helps to prevent the issues arising from cylinder deactivation and lower gas mileage. However, before you disable the system, you should weigh the benefits and drawbacks carefully.

If you choose to proceed, ensure you select the best scan tool for your vehicle. Also, be prepared to spend some time and effort because different tools have different methods of disabling the afm. Remember that disabling the afm system could have legal repercussions in some states, and you could face hefty fines or even have your warranty voided if you disable the system yourself.

So, it’s advisable to consult with an expert before making any significant modifications to your vehicle’s engine management system. Keep these guidelines in mind, and you’ll be well equipped to make an informed decision about disabling afm with a scan tool.

Dustin Babich

Dustin Babich

Dustin Babich

As the passionate author behind, Dustin Babich is a knowledgeable expert in all things automotive. With a deep understanding of car tools, equipment, engines, and troubleshooting techniques, Dustin Babich shares invaluable insights, practical tips, and effective solutions to empower readers in overcoming car-related challenges.


Leave a Reply

Avatar placeholder
As an Amazon Associate, I earn from qualifying purchases. This will not charge you any extra cost.