Dyson Air Quality Sensor Problems

Experiencing Troubles with Your Dyson Air Quality Sensor? Here’s What You Need to Know

Dyson air purifiers are renowned for their advanced technology and efficient air purification capabilities. However, like any sophisticated device, they can encounter issues, particularly with the air quality sensor. Take a look at these tips to find out how to fix them.

Common Causes of Sensor Problems

An image depicting a person diagnosing a problem with a Dyson air quality sensor.

  1. Sensor Blockage: The most frequent cause of Dyson air quality sensor issues is the blockage of the sensor or its opening port with dirt and dust. This blockage can lead to malfunctioning and incorrect readings.
  2. Faulty Wire Connection: Sometimes, a weak or damaged wire connection can lead to sensor problems.
  3. Clogged Filters: Overuse without changing the air filters can lead to clogged sensors, as dust particles accumulate over time.

Diagnosing the Problem

An image showing a person fixing a problem with a Dyson air quality sensor.

The first step in addressing a Dyson air quality sensor issue is to diagnose the problem correctly. If your Dyson device shows unusually high PM2.5 and PM10 levels or constantly operates at full power, it’s likely that the sensor is blocked or malfunctioning.

Steps to Fix the Sensor Problem

  1. Locate the Sensor: Identify the sensor’s location on your Dyson device. It is usually found behind cut-outs on the case, towards the back of the unit.
  2. Clean Around the Sensor: Unplug the fan and clean around the sensor ports using a vacuum cleaner with a dusting brush or a damp microfiber cloth.
  3. Vacuum Out the Sensor: Use a vacuum cleaner with an appropriate attachment to remove any dirt from inside the sensor. Ensure a good seal around the sensor ports and vacuum each port for about 10 seconds.
  4. Turn the Fan Back On: After cleaning, plug the fan back in and turn it on. The sensor should start taking accurate readings, and the air levels should normalize.

Additional Tips

  • Clean the Filter: Sometimes, cleaning the filter is necessary to resolve the issue. Remove and vacuum the filter before reinstalling it.
  • Perform a Hard Reset: If cleaning doesn’t work, try a hard reset on the unit and then blow into the sensor ports using compressed air or a blow dryer on a cool setting.

Steps To Clean The Dyson Air Quality Sensor

A person is actively cleaning the sensor area of the purifier using a small brush and a handheld vacuum cleaner.

Here are steps to clean the filter follow these simple steps and resolve the problem

Step 1: Locate the Sensor

Begin by identifying the sensor’s location on your Dyson device. Typically, the sensors can be found beneath holes or cuts on the upper surface, allowing air to flow into the filters. Locating these is essential for effective cleaning.

Step 2: Clean the Area Around the Sensor

Before disassembling any part of the sensor, check if these holes are clear of debris. If they’re clogged, air flow may be obstructed, leading to inaccurate readings.

Use a brush to clear out any dust and debris, then wipe the area with a damp or dry cloth for thorough cleaning. A vacuum cleaner can also be effectively used to blow out the dust from these holes.

Step 3: Clean the Sensor Itself

Now, focus on the sensor. If it’s clogged, your readings may be falsely high. Without disassembling the sensor, place the nozzle of a vacuum cleaner over the larger cuts you’ve just cleaned.

Set the vacuum to maximum speed and turn it on, keeping it in place for 20 to 30 seconds. Repeat this process two or three times. Alternatively, a blow dryer can be used to remove dust from the sensor, especially if using a HEPA vacuum or blow dryer for the best results.

Step 4: Test the Sensor

After cleaning, it’s time to test the sensor. Turn on your Dyson and check the readings. If they have normalized, your job is done. However, if the sensor continues to show high readings, consider contacting a service center for further assistance.

Understanding the Effects of a Clogged Sensor

The scene depicts a living room with visible air pollutants like dust and smoke particles, illustrating a malfunctioning air quality sensor's inability to detect and filter these pollutants.

A clogged air quality sensor can lead to inaccurate pollutant level readings in your home. This can be particularly concerning if you have young children or pets, as they are more susceptible to polluted air. In such cases, it’s best to resolve the issue promptly.

Benefits of the Dyson Air Quality Sensor

The air is clear, emphasizing the effectiveness of the Dyson sensor in maintaining good air quality.

The Dyson sensor is adept at identifying harmful particles in your indoor environment, such as smoke, pollen, and chemical toxins. This early detection allows you to take necessary actions to maintain a healthy indoor air quality.

The sensor uses infrared technology to detect these particles, aiding in the prevention of respiratory issues and ensuring a safe home environment.


Maintaining your Dyson air purifier and regularly cleaning the air quality sensor can prevent many common issues. If you’ve tried the above steps and the problem persists, it may be time to contact Dyson support for further assistance. Remember, a well-maintained air purifier ensures a healthier indoor environment.

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