Is it okay to drive with the check engine light on?
The short answer is no, it is generally not recommended to drive with the check engine light on. The check engine light is an indicator that there is an issue with your vehicle's emissions control system or other critical components, and ignoring it can lead to further damage and more expensive repairs down the line.
Understanding the Check Engine Light
The check engine light, also known as the malfunction indicator light (MIL), is a warning light that illuminates on your vehicle's dashboard when the onboard diagnostic system detects a problem. This system continuously monitors various sensors and components in your car, and the check engine light is triggered when it detects an issue that could affect your vehicle's emissions, fuel efficiency, or overall performance.
Potential Causes of the Check Engine Light
The check engine light can be triggered by a wide range of issues, including:
- Faulty oxygen sensors
- Loose or damaged fuel cap
- Malfunctioning catalytic converter
- Misfiring spark plugs
- Problems with the engine's computer or wiring
While some of these issues may not seem immediately critical, they can still lead to further damage if left unaddressed.
Risks of Driving with the Check Engine Light On
Driving with the check engine light on can have several consequences, including:
- Decreased fuel efficiency: The problem that triggered the check engine light can cause your vehicle to consume more fuel, leading to higher fuel costs and a larger environmental impact.
- Increased emissions: Issues with the emissions control system can cause your vehicle to produce more harmful pollutants, which is not only bad for the environment but may also result in failing a state-mandated emissions test.
- Further damage to components: Ignoring the check engine light can allow the underlying problem to worsen, potentially leading to more expensive repairs or even the failure of critical components like the catalytic converter or engine.
In some cases, driving with the check engine light on can also be illegal, as it may be a violation of local or state laws.
What to Do When the Check Engine Light Comes On
If the check engine light illuminates, the best course of action is to have your vehicle diagnosed by a qualified mechanic as soon as possible. They can use a diagnostic tool to read the trouble codes stored in your vehicle's computer, which will help them identify the specific problem and recommend the appropriate repairs.
In the meantime, it's generally advisable to avoid driving your vehicle if the check engine light is on, as this can help prevent further damage. If you must drive, try to minimize the distance and avoid high-speed or high-load driving conditions.
Why is my check engine light on but my car is fine?
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.
Is solid check engine light bad?
A solid check engine light is what most people encounter and may signal a minor or more complex repair. You should address this warning as soon as possible — however, it doesn't pose an immediate threat to your vehicle unless something is noticeably wrong.
How urgent is the check engine light?
Check engine lights aren't usually an emergency
Chances are, you can drive for a few more miles, or even a few more days, with your check engine light on. However, don't ignore the light completely. You should always see a certified mechanic if your check engine light appears.
Can I still use the car with a check engine light?
You can drive as long as you want to with the check engine light on. It doesn't mean that your vehicle is running as well as it can. The other concern is if something else goes wrong you may not know since the check engine light is already on.
What is the most common cause of the check engine light?
One of the most common reasons your check engine light may come on is that your oxygen sensor is failing. Your local auto repair shop in Western Washington can replace it for you quickly, which will restore your vehicle's ability to measure unburned oxygen in its exhaust system.
How serious is a check engine light?
The reasons for a check engine light turning on can range from something minor like a loose gas cap to something more serious like a faulty catalytic converter. It could even be a sign of internal engine failure. Ignoring the problem can turn a potentially quick fix into a costly and time-consuming repair.
How long can I drive with the check engine light on?
While driving, the check engine light comes on the dashboard, which indicates that there is an issue with the engine. If the indication is not blinking, you can ignore it for some time. You can drive the car whenever it is not showing any problem.
Does AutoZone check engine light for free?
We can help you get a reading yourself. Borrow an OBD reader to get a Check Engine Light reading with the AutoZone Free Fix Finder Service. It's a simple task that takes less than two minutes.
Can I still drive with the engine light on?
If the light comes on and remains on, yet everything seems to be working like normal, you should be able to continue driving. But it is important to schedule an appointment to have the issue diagnosed and fixed. If the light comes on and it is blinking, this is an indication of something more serious.
