Can I drive with the check light on?
The short answer is that 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 components, and ignoring it can lead to further damage and more expensive repairs down the line.
What the Check Engine Light Means
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 monitors various sensors and components in your car, and when it detects an issue, it triggers the check engine light to alert you.
The check engine light can indicate a wide range of problems, from a loose gas cap to a malfunctioning catalytic converter. Some issues are more serious than others, but it's important to have the problem diagnosed and addressed as soon as possible to prevent further damage to your vehicle.
Risks of Driving with the Check Engine Light On
- Increased Emissions: The check engine light is often triggered by issues with the emissions control system, which can lead to increased air pollution and higher fuel consumption.
- Reduced Fuel Efficiency: A problem with the engine or other components can cause your vehicle to use more fuel, leading to higher fuel costs and a shorter driving range.
- Potential Engine Damage: Ignoring the check engine light can allow a minor problem to escalate into a more serious issue, such as a malfunctioning catalytic converter or a failed engine component.
While it may be tempting to continue driving with the check engine light on, it's generally not a good idea. The best course of action is to have the problem diagnosed and repaired as soon as possible to avoid further damage and ensure your vehicle is running safely and efficiently.
When It's Okay to Drive with the Check Engine Light On
There are a few rare instances when it may be acceptable to drive with the check engine light on, but these are the exceptions rather than the rule:
- Loose Gas Cap: If the check engine light is on and you've recently refueled, it's possible that a loose or missing gas cap is the cause. In this case, you can try tightening the gas cap and see if the light turns off.
- Intermittent Issues: If the check engine light is intermittent, meaning it turns on and off, it may be safe to continue driving, but you should still have the issue diagnosed as soon as possible.
- Minor Sensor Issues: In some cases, a minor sensor issue may trigger the check engine light, but the vehicle may still be drivable. However, it's still important to have the problem addressed to prevent further issues.
If the check engine light is accompanied by other warning signs, such as a loss of power, unusual noises, or a change in the vehicle's performance, it's best to pull over and have the vehicle towed to a repair shop.
What is the most common cause of a check engine light?
The 9 Most Common Causes for the Check Engine Light
- Loose Fuel Cap. This one is actually very common.
- Oxygen Sensor. Your emissions system will have oxygen sensors that are there to detect exhaust issues.
- Other Emissions Problems.
- Spark Plugs or Ignition Coils.
- Wiring Issues.
- Transmission.
- Cooling System.
- Fuel System.
Can low oil cause a check engine light?
Low Oil and Check Engine Light
However, low oil pressure, which can be caused by low oil levels, can be a reason for the check engine light to turn on. Low oil pressure can seriously interfere with your car's performance and disable your vehicle if not addressed immediately.
Why is my check engine light on but my car runs fine?
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 my check engine light?
It could be a more significant problem that can wait a few days, but should be investigated at your earliest convenience. If the check engine light is flashing, you have a major problem, and you need to stop driving the vehicle as soon as possible.
Should you worry if your check engine light is on?
A check engine light may be serious, so it's important to inspect your vehicle as soon as possible. While this warning indicator can arise from simple fixes like inflating the tires or tightening the gas cap, it is best to err on the side of caution and promptly find the cause of the problem.
How long can you drive with the check engine light on?
50 to 100 miles
While going somewhere, if you see the check engine light on and you can't immediately go to the repair shop, don't worry. It is safe to drive your car for 50 to 100 miles. If there is an issue with the sensor, turning the check light off takes some time.
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.
Can you drive with a solid check engine light?
If it's solid, you can drive cautiously but should make an appointment to have it checked. If it's blinking, pull over and stop driving immediately. Check the Gas Cap: If your check engine light is solid and you recently filled up your tank, double-check the gas cap to make sure it's securely tightened.
Can I go to AutoZone for a check engine light?
You can use the Free AutoZone Fix Finder Service to get a complete report on your vehicle so you can fix the problem quickly and put your mind at ease.
Can I drive with a solid check engine light?
If it's solid, you can drive cautiously but should make an appointment to have it checked. If it's blinking, pull over and stop driving immediately. Check the Gas Cap: If your check engine light is solid and you recently filled up your tank, double-check the gas cap to make sure it's securely tightened.
