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What does check emission system mean on a Honda Civic?

The "check engine" or "check emission system" light on a Honda Civic is an indicator that there is a problem with the vehicle's emissions control system or engine. This warning light is part of the on-board diagnostics (OBD) system, which monitors the various components of the engine and emissions control systems to ensure they are functioning properly.


Understanding the Check Engine Light


When the check engine light illuminates on the dashboard of a Honda Civic, it means that the OBD system has detected an issue that could affect the vehicle's emissions or engine performance. The light may come on for a variety of reasons, including:



  • A problem with the catalytic converter, oxygen sensors, or other emissions control components

  • Issues with the engine, such as misfiring, faulty spark plugs, or problems with the fuel system

  • Loose or damaged gas cap, which can cause evaporative emissions to leak

  • Problems with the vehicle's computer or wiring


The check engine light is designed to alert the driver to these issues so they can be addressed before they become more serious or lead to further damage to the vehicle.


Diagnosing and Addressing the Problem


When the check engine light is illuminated, it's important to have the vehicle's diagnostic system checked as soon as possible. This can be done by taking the car to a Honda dealership, an auto parts store, or a qualified mechanic, who can use a diagnostic tool to read the trouble codes stored in the vehicle's computer. These codes will provide information about the specific problem that triggered the check engine light.


Once the problem has been identified, the necessary repairs can be made to address the issue and turn off the check engine light. This may involve replacing faulty parts, adjusting the engine's settings, or addressing other problems with the emissions control system or engine.


It's important to address the check engine light promptly, as ignoring the problem can lead to further damage to the vehicle and potentially more expensive repairs down the line. By taking the time to diagnose and fix the issue, Honda Civic owners can help ensure their vehicle continues to run smoothly and efficiently.

How do you fix emission system problems?


Diagnosing & Fixing the Problem

  1. Tighten or change your gas cap. Check the rubber seal on the inside of the gas cap to make sure there aren't any cracks or damage.
  2. Replace your air filter.
  3. Change faulty oxygen sensors.
  4. Take your vehicle to a mechanic.



What does it mean when the check emission system warning comes on?


This could be due to various issues such as a malfunctioning sensor, a problem with the catalytic converter, a leak in the exhaust system, or issues with the engine management system. It's essential to address this warning promptly as it can affect the vehicle's performance, fuel efficiency, and environmental impact.



How much does it cost to fix an emission system?


If your vehicle failed emission testing and it needs repairing, then the cost will depend on the exact cause, but the repair work typically starts around $200. Replacing your exhaust system depends on the type of car you drive, but that work starts at approximately $175.



Is emission system problem bad for your car?


The performance of your engine can be affected by exhaust system issues and emissions problems. You want to get a comprehensive inspection if you notice your engine isn't functioning normally, it's wasting power, sputtering, etc. There could be a problem related to emissions or even engine damage.



How much does it cost to fix check emission system?


If your vehicle failed emission testing and it needs repairing, then the cost will depend on the exact cause, but the repair work typically starts around $200. Replacing your exhaust system depends on the type of car you drive, but that work starts at approximately $175.



Are emissions problems serious?


Having an emissions issue is not only bad for the environment and makes it hard to breath, it can also decrease your vehicle's fuel efficiency and cause other issues. It's important to pay attention to signs of vehicle emissions issues, even when you don't have an emissions test coming up.



Can I drive with a check emission system on my Honda?


It's not recommended to drive with the Check Emission System warning light on until you know the cause. Long-lasting damage and extensive repairs can result.



Why does my Honda Civic say check emission system?


Means there's a problem with the emission system, take it back to where you had the oil change, might not be related so you will probably have to pay.



How much does it cost to fix a check emission system?


If your vehicle failed emission testing and it needs repairing, then the cost will depend on the exact cause, but the repair work typically starts around $200. Replacing your exhaust system depends on the type of car you drive, but that work starts at approximately $175.



Is it safe to drive with the check emission system on?


Is It Safe to Drive with the Check Emission Light On? Technically, you can still drive your vehicle even if the check emissions light is on. However, it's not recommended.


Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.