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Acura Check Engine Light: Causes and Solutions

Discover causes and solutions for Acura Check Engine Light

The Acura check engine light signals that there may be a problem with the car’s engine or emissions system. It indicates that the onboard diagnostic system has found a problem in the vehicle.

The check engine light is a warning that appears when there is a potential problem with the engine or emissions system. Some common causes of the Acura check engine warning light include faulty oxygen sensors, mass air flow sensors, catalytic converters, and more.

In this Dbd guide, we will provide you with all the necessary information on common causes of the Acura warning light and the steps to reset it.

Our team has researched the reasons for the Acura engine warning light. We also consulted manufacturers to create a comprehensive guide for you. 

What does the Acura check engine light mean?

The Acura check engine light warns you of an engine or emissions system problem. A loose gas cap, bad oxygen sensor, faulty catalytic converter, or fuel tank issues can trigger it.

If the check engine light stays on, a non-critical issue needs attention soon. But if it flashes, it’s a severe problem that needs immediate attention.

It’s crucial to fix the issue to prevent further damage to your Acura, such as decreased gas mileage, reduced performance, or expensive repairs. So, take your Acura to a professional to diagnose and fix the problem. That way, your car will perform well and last a long time

Common causes of an Acura check engine light

When Acura’s check engine light comes on, different issues related to the engine or emissions system can cause this engine malfunction indicator lamp to turn on. Acura has a turbo engine, but the engine might still get engine lights. [1]Acura, “Engine Details, https://www.acura.com/2022/rdx/modals/engine-details” Some of the common causes are as follows:

  • Loose, broken, or missing gas cap
  • Failing or clogged catalytic converter
  • Fouled spark plugs or spark plug wires
  • Faulty oxygen sensor
  • Faulty mass air flow sensor
  • Engine vacuum leak
  • Issues with the aftermarket items

If the Acura check engine light turns on, it could state various issues related to the engine or emission system. Some of the typical causes of this engine malfunction indicator light are: 

Problems like running rough, engine misfire, or hesitation when accelerating impact a car’s performance. Ignoring these issues can lower gas mileage, increase emissions, and cause more damage.

A bad oxygen sensor is an example of a problem that can make a car burn more fuel than necessary. The O2 sensor sends data to the car’s computer to opt for the right mixture of air and fuel that enters the cylinders in your engine. 

In contrast, a malfunctioning catalytic converter can cause power reduction and more emissions.

What to do when the Acura check engine light comes on

You can do the following things if the Acura check engine light comes on:

  • Take your Acura to a mechanic as soon as possible if the engine light is flashing.
  • Check the gas cap for looseness or damage before heading to the mechanic.
  • Regular car maintenance can prevent issues like rough running or hesitation while accelerating.

One of the most common reasons for decreased gas mileage and higher emissions is a faulty oxygen sensor. It can make your vehicle burn more fuel than necessary, causing these issues.

If the catalytic converter is failing, it may cause your car to stall or lose power, which can be expensive to fix.

How to reset the Acura check engine light?

Once after fixing the issue that causes the Acura warning light to turn on, it’s important to reset it. This will ensure that the light stops flashing and prevent any confusion. Additionally, resetting the engine light helps identify any new issues that may arise in the future.

We have listed a step-by-step guide on how to reset the Acura check engine light for the smooth running of the vehicle:

Step 1: Turn off the engine and all the accessories

Before resetting the check engine light, it’s important to take safety measures. First, turn off the engine and wait a few minutes for it to cool down to avoid any risk of burns. 

Step 2: Open the hood of the vehicle and locate the battery

To find the car’s battery, usually check under the hood or in the trunk. However, keep in mind that the exact location may vary based on the car’s make and model. 

Step 3: Disconnect the negative terminal of the battery

To avoid any accidental shocks or electrical problems, start by using a wrench or a socket set. With those tools, loosen and remove the negative terminal on the battery. Besides, be careful not to touch the positive terminal with that tool.

Step 4: Wait for a few minutes

After disconnecting the battery, wait for a few minutes. It helps to ensure that there is a discharge of any residual electricity in the system.

Step 5: Reconnect the negative terminal of the battery

To reset the Acura check engine light, reconnect the negative battery terminal. While connecting, make the secure checking of the terminal.

Step 6: Start the engine and let it run for a few minutes

After resolving the issue with your car, start the engine and let it run for a few minutes. This will help you verify that the engine is working properly. 

Step 7: Check for any warning lights

After resolving the issue that triggered the check engine light in your Acura, check the dashboard for any warning lights. If the check engine light is off, the system has been reset successfully.  

Related Stories


Can I continue to drive my Acura with the check engine light on?

If the check engine light is on in your Acura, it’s best to avoid driving it further. This light can state a significant problem with your vehicle’s engine or emissions system. If you continue to drive, it could lead to more severe damage or safety concerns. 

How serious is a solid check engine light?

When the check engine light is solid, it means there is an issue to fix, but it is not an emergency. It’s crucial to get the problem diagnosed and fixed soon to avoid more severe issues in the future.

What is the first thing to check when the check engine light comes on?

You should check the gas cap if your check engine light comes on. If it’s loose or damaged, tighten it or replace it, and see if the light goes off. If not, have the vehicle inspected by a qualified mechanic in the service center. 

The Acura check engine light is an important warning system that notifies of any problems with the vehicle’s engine. We hope our guide has provided you with the requested information about the Acura warning light. 

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DbdPost Staff is a team of writers and editors working hard to ensure that all information on our site is as accurate, comprehensive, and trustworthy as possible. Our goal is always to create the most comprehensive resource directly from experts for our readers on any topic.


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