How To Turn Off VCM On Honda Accord?

The Honda Accord is well-known for its low emissions as well as its comfortable and easy-going driving experience. However, some drivers may experience problems with the Variable Cylinder Management (VCM) system. The VCM system deactivates three cylinders in certain driving conditions to save fuel, but this can lead to hesitation or a stumble while transitioning. 

In this article, I will discuss How To Turn Off VCM On Honda Accord to improve your driving experience.

How To Turn Off VCM On Honda Accord: Step By Step Process

These are the steps that helps you to turn off VCM on honda accord:

  • Purchase an SVCM controller
  • Locate the number one coolant sensor
  • Disconnect the coolant sensor and plug in the SVCM controller
  • Connect the wire from the controller to the positive terminal of the battery
  • Use zip ties to secure the wiring

Purchase an SVCM controller

The first step in turning off the VCM system is to purchase an SVCM controller. This device is designed to bypass the VCM system, and it can be found online for around $100.

Locate the number one coolant sensor

Once you have the controller, you will need to locate the number one coolant sensor on your car. Following the path of the coolant hose will lead you to the location of this sensor, which is typically situated close to the front of the engine.

Disconnect the coolant sensor and plug in the SVCM controller

Disconnect the coolant sensor from the car and plug in the SVCM controller in its place.

Connect the wire from the controller to the positive terminal of the battery

Connect the wire from the controller to the positive terminal of the battery.

Use zip ties to secure the wiring

Use zip ties to secure the wiring in place and make sure everything is properly connected.

You can also watch a video on how you can turn off your VCM on honda accord.


Improved drivability

By disabling the VCM system, you will no longer have to deal with the hesitation or stumble caused by the VCM system. Additionally, you will have better throttle response.

Reduction in oil consumption

Disabling the VCM system may also result in a decrease in oil consumption.

Note: Disabling the VCM system may result in a decrease in fuel economy, but some drivers may prefer the improved drivability over a slight decrease in fuel efficiency.

Can You Disable Honda VCM?

Yes, you can disable Honda VCM (Variable Cylinder Management), a fuel-saving technology that deactivates a portion of the engine cylinders to save fuel. To disable VCM, you need to use a tuning device or software that can reprogram the Engine Control Module (ECM) or Powertrain Control Module (PCM) in your Honda vehicle. Some tunable positions, like 40, 50, or 60, can disable VCM, and the specific setting may vary depending on your climate conditions.

This can be particularly useful for users who have encountered issues with their CTS (Coolant Temperature Sensor) and want to disable VCM while also calibrating the dashboard temperature gauge.

What Does VCM Mean on a Honda Engine?

VCM stands for Variable Cylinder Management, and it is a technology employed by Honda in their engines to enhance fuel efficiency and reduce emissions. VCM automatically deactivates a portion of the engine cylinders, typically 1/3 or 1/2, based on driving conditions.

By running on fewer cylinders when full power is not required, the engine consumes less fuel. This technology is instrumental in improving fuel economy and environmental performance.

Which Accord Has VCM?

The VCM technology is featured in various Honda Accord models. From 2008 to 2017, Honda Accord V6 models, except for the EX-L V6 6MT Coupe, were equipped with VCM. 2008-2012 models come with VCM-2, which supports 3-, 4-, and 6-cylinder operation. In contrast, 2013-2017 models feature VCM-3, designed for 3- and 6-cylinder operation.

What Is a VCM Sensor?

VCM sensors are not directly related to Honda’s Variable Cylinder Management but refer to sensors used in power transformers. They play a critical role in monitoring and maintaining the health and performance of power transformers.

These sensors measure six crucial parameters: hydrogen level, moisture level, oil temperature, oil level, pressure, and short-circuit conditions. Monitoring these parameters helps ensure the longevity and reliability of power transformers in electrical systems.

Can I Deactivate Cylinder Deactivation?

In most cases, deactivating cylinder deactivation systems, such as Variable Valve Timing (VVT) or Active Fuel Management (AFM), is not a straightforward process. It typically requires reprogramming the Engine Control Module (ECM), Body Control Module (BCM), and possibly the Powertrain Control Module (PCM).

Returning these modules allows the vehicle to run without the VVT or AFM features, effectively disabling cylinder deactivation. This process may necessitate specialized tools and knowledge, so it’s advisable to consult with a professional or tuner familiar with your specific vehicle’s ECM and BCM.

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Ammar Masoud

I have had a long and fulfilling career in the automotive industry, primarily with Honda and Acura. With 15 years of experience as a Honda service technician, I became highly skilled in repair and maintenance, gaining a deep understanding of these vehicles. After many years in the automotive field, I decided to embark on a second career in industrial manufacturing. It was a significant change, but I found that the skills I had honed in the automotive industry were incredibly valuable in my new role. In my current position in industrial manufacturing, the demand for quality workmanship and meticulous attention to detail is paramount. Fortunately, these are traits that I have cultivated throughout my years in the automotive industry. I take pride in applying these skills to meet the high standards expected in the manufacturing sector.