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Is a solid check engine light serious?


The check engine light is one of the most misunderstood indicators on your vehicle's dashboard. While it might not always signal an immediate emergency, ignoring it can lead to costly repairs or even safety hazards down the road. At Kevin's Autos, with years of experience in car maintenance and repair, we’ve seen how addressing this issue promptly can save drivers time, money, and stress.


What Does a Solid Check Engine Light Mean?


A solid check engine light typically indicates a problem with your vehicle's emissions, fuel, or ignition systems. Unlike a flashing check engine light, which signals a more urgent issue like a misfire that could damage your engine, a solid light suggests a less critical but still important problem. Common causes include:



  • A loose or damaged gas cap

  • Faulty oxygen sensors

  • Malfunctioning catalytic converter

  • Issues with the mass airflow sensor

  • Worn-out spark plugs or ignition coils


While the car may still seem to run fine, these issues can reduce fuel efficiency, increase emissions, and potentially lead to more severe problems if left unchecked.


Should You Keep Driving?


In most cases, a solid check engine light allows you to continue driving for a short period, but it’s important to address the issue as soon as possible. Here’s what you should do:



  • Check the gas cap: A loose or damaged gas cap is one of the most common and easily fixable causes of a solid check engine light. Tighten it and see if the light turns off after a few drives.

  • Monitor your car’s performance: If you notice unusual symptoms like reduced power, strange noises, or poor fuel economy, it’s best to stop driving and have your car inspected immediately.

  • Schedule a diagnostic check: Even if your car seems to be running fine, a professional diagnostic scan can pinpoint the exact issue and prevent further damage.


Why You Shouldn’t Ignore It


Ignoring a solid check engine light can lead to more serious problems over time. For example:



  • Minor issues, like a faulty oxygen sensor, can cause your engine to run inefficiently, leading to higher fuel costs.

  • Unresolved problems with the catalytic converter can result in expensive repairs or even render your car undrivable.

  • Prolonged neglect can cause damage to other components, increasing repair costs significantly.


At Kevin's Autos, we always recommend addressing a solid check engine light promptly to avoid these potential pitfalls.


How Kevin’s Autos Can Help


At Kevin’s Autos, we specialize in diagnosing and repairing all types of vehicle issues, including those related to the check engine light. Our experienced technicians use state-of-the-art diagnostic tools to identify the root cause of the problem and provide reliable, affordable solutions. Whether it’s a simple fix like tightening a gas cap or a more complex repair, we’ve got you covered.


Don’t let a solid check engine light stress you out. Contact us today to schedule an inspection and keep your car running smoothly!


Frequently Asked Questions

What to do if the check engine light comes on solid?


Never Ignore Check Engine Light
When the light comes on, take the car to a mechanic and address the problem. If you do your own investigation and determine the code that causes the warning, search a list of OBD-II codes to tell you which specific component has an issue.



What is the most probable cause of a check engine light?


The emissions/exhaust system is the most likely culprit for many check engine lights being illuminated. There could be an exhaust leak or a problem with the catalytic converter. The mass airflow sensor (MAF) is another sensor that is easily tripped or can fail.



Can you drive with a solid check engine light?


Driving a vehicle with a solid check engine light on is generally not advisable. A solid check engine light indicates that the vehicle's onboard diagnostic system has detected a problem that needs attention, but it doesn't necessarily mean that the vehicle is unsafe to drive.



Can a check engine light be harmless?


Steady Light: If the light is steady and not flashing, it's generally safe to continue driving, but you should schedule a diagnostic check as soon as possible. The issue is likely not an emergency, but it could become more serious if left unaddressed.



Why is my engine light on but no problem?


The check engine light indicates something is wrong with your engine, the emissions system, or the computer that monitors those two. If there are no other symptoms, your check engine light may indicate a problem with your computer, a loose gas cap, transmission errors, or problems with your O2 sensor.



How urgent is a solid check engine light?


It could be a minor problem such as a loose gas cap, a faulty sensor, or a minor emissions-related issue. While it's important to have the issue resolved, a solid check engine light doesn't require immediate attention.



Why is my engine light on but nothing seems wrong?


Check engine lights can turn on for a number of reasons. Some can be minor problems such as tightening the gas cap, and others can be serious problems like engine issues. If your vehicle is running fine, the check engine light may signal a minor issue, but it is best to visit a mechanic to make sure.



Can low oil cause a check engine light?


If your check engine light comes on, it's important not to panic. The first step is to check your oil levels. If it's low, you've likely found the culprit, and you should add oil as needed. You may also need to tighten the gas cap, as a loose cap can trigger the check engine light.



What does a steady check engine light mean?


A steady light means something is wrong or about to go wrong, but it is not a dire emergency. It could be something as simple as a sensor going bad, which normally is an inspection issue and nothing more.



What does a continuous check engine light mean?


If the light is on always during driving with no noticeable driving or performance issues, there's a permanent error in the emission control system.


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.