
Is car safe to drive with check engine light on?
Yes, you can continue to drive your vehicle with this light on, but we recommend that you drive it straight to your local mechanic to find out what’s wrong. Pro Tip: If the check engine light is blinking, you need to stop the vehicle. A flashing check engine light indicates a very serious issue. It could be a problem with the catalytic converter.
What should I do if my check engine light appears?
- Check your repair manual (if you have it with you) for what the service engine light means on your car model.
- Check all fluid levels, including the engine oil level, brake fluid level, wiper washer fluid, automatic transmission fluid (if you have a dipstick for it), and the coolant level.
- Check to make sure your fuel tank cap is tightened properly.
Does it hurt to drive with check engine light on?
Whether or not it’s safe to drive with the check engine light on depends on vehicle performance with the light on and the root cause of its illumination. Regardless, you should always have your car inspected as soon as possible after the light turns on.
Can I keep driving with a blinking check engine light?
The rule of thumb is that if the check engine light is flashing, you can’t keep driving the car. It’s an emergency. Often it indicates an engine misfire. If you keep driving, you will likely cause irreversible damage, mostly to the (expensive) catalytic converter.

How long can I drive my car with check engine light on?
If your Check Engine light comes on for any reason, it's still possible to drive your vehicle, but it is only recommended to drive another 50 to 100 miles before scanning your car's computer for error codes. This process allows you to identify the issue at hand and address it as you see fit.
How serious is a check engine light?
Whether solid or blinking, when your “check engine” light has come on, it's best to take it to the repair shop. The light could indicate any number of things, most of which will require a mechanic to diagnose and address. Your car's performance is computer-monitored more than you might think.
What is the most common reason for the check engine light to come on?
A faulty oxygen sensor will return a check engine warning every time. In fact, it's one of the most common reasons why a check engine light comes on while you're driving your automobile.
Can check engine light turn itself off?
A check engine light will shut itself off if the condition that caused it is remedied. So, if your converter is marginal, and you did a lot of stop-and-go driving, which creates high demand for the converter, that may have turned on the check engine light.
How do I turn my engine light off?
0:123:01How To Reset The Check Engine Light-EASY And FREE - YouTubeYouTubeStart of suggested clipEnd of suggested clipIt completely disconnected from the battery. And leave it off for about a minute if you want to beMoreIt completely disconnected from the battery. And leave it off for about a minute if you want to be extra safe leave it off for two minutes. But about one minute should be enough for most cars.
Why is my engine light on but nothing seems wrong?
If nothing seems to be acting strange, then it is probably safe to drive it until you can get it into a mechanic. Sometimes the light may come on after fueling if the gas cap is a little loose. Or it could mean your catalytic converter needs to be inspected.
What throws a check engine light?
The best news that you get get in regard to a check engine light is that it was caused by a loose gas cap. A loose, cracked or otherwise damaged cap can allow gasoline vapors to evaporate out of the filler hose, triggering the light! Always be sure your gas cap is tight every time you fill up!
Why is my check engine light on but my car is running fine?
Check Engine Light False Alarms Sometimes you'll notice a check engine light even though the car runs fine. There are a couple of reasons why this may be. If there is a problem with the car, it's probably the O2 sensor. This is an extremely common problem with modern cars and a relatively easy one to fix.
What things trigger check engine light?
What causes the check engine light to come on?Oxygen sensor (or O2 sensor) ... Catalytic converter failure. ... Spark plug or ignition coil failure. ... Airflow sensor failure. ... Replace the thermostat. ... Replace exhaust gas recirculation (EGR) valve and clean all EGR ports.
How much does it cost to fix engine light?
Repair costs for the most common check engine light problems range from under $20 to almost $1,200, according to CarMD's analysis of millions of repairs recommended in 2016 in the U.S.
What does a yellow check engine light mean?
In some cars, a yellow check engine light means there is a problem that needs to be investigated and a red or flashing light means there is a serious problem and you need to stop right away. Your gauges will help you to determine problems like overheating and low oil pressure.
Why is my check engine light on but my car is running fine?
Check Engine Light False Alarms Sometimes you'll notice a check engine light even though the car runs fine. There are a couple of reasons why this may be. If there is a problem with the car, it's probably the O2 sensor. This is an extremely common problem with modern cars and a relatively easy one to fix.
How Urgent is the Check Engine Light?
Whether it’s something as minor as a loose gas cap or something more serious like a failed catalytic converter, it should be checked out and fixed.
How do You Diagnose Car Check Engine Light Warnings?
If you don’t know the exact reason why your Check Engine Light is on, then it can be very difficult to immediately determine if it’s safe enough for you to drive or not.
Why is your Check Engine Light Flashing?
Let’s dig a little deeper into why your dashboard warning lights are on …
How to stop a car when it's flashing?
If it’s flashing for more than 6 seconds, that is potentially an emergency situation. Step 2: Stop driving. Safely pull over.
How long does the check engine light last?
Whenever you start your car you’ll notice that the check engine light glows temporarily – usually for around six seconds.
What happens if your oxygen sensor is faulty?
It then communicates this information to your car’s computer so that it can adjust the engine’s air and fuel mixture. When your oxygen sensor is faulty, your car will use up more fuel and produce more emissions.
Why does my engine light come on?
A cracked, faulty or loose gas cap / fuel cap can cause your engine light to come on – mainly because the fuel system has a vapour leak. In other cases, it could be a more serious leak in the upper portion of the fuel system. Tighten or replace the gas cap, then keep driving.
What happens to your car when you drive with your check engine light on?
But if your vehicle is experiencing some of the other common reasons for a check engine light to come on, you could be worsening the damage and increasing your repair bill.
Why does my check engine light come on?
While less common, it’s possible that your check engine light came on because your engine is overheating or misfiring. Misfires can be spark-related, fuel-related, or mechanical in nature. At the very least, misfires can impact your mileage and ability to accelerate. If this is an issue, you could be a hazard on a busy road or a steep incline.
What does it mean when your check engine light is flashing?
A flashing light could mean a more serious problem like an overheating engine or engine misfire, sometimes causing irreversible damage. You shouldn’t drive further if this is the case.
Why is my car red with a yellow check engine light?
Some cars have a yellow check engine light that indicates a problem should be addressed soon, and a red check engine light to indicate that you need to pull over immediately. The most important thing to do is not panic, but perform a brief assessment to determine if you should continue driving. If the way the car drives didn’t change, ...
What happens if spark plugs are triggered?
Spark plug damage: If your spark plugs triggered the sensor, it’s important to prevent further damage and get them replaced as soon as possible. But if they weren’t already to blame, by ignoring other problems, they could be the ones to suffer.
What to do if your car lights don't change?
If the way the car drives didn’t change, the light isn’t flashing, and you don’t notice any sounds or smells, you can continue driving a moderate distance (preferably back home or to your local Virginia Tire & Auto). Make sure to schedule an appointment to get the light checked and the problem repaired as soon as possible.
What to do if your car vibrates?
Did the car jolt or vibrate? This could be your spark plugs. If your car is making odd physical movements making it difficult to drive, it’s best to call for a tow truck. From there, schedule an appointment for repair as soon as possible.
What does the check engine light mean?
The check engine light is usually a small icon in the middle of your dashboard, yellow or red in color. All lights may turn on for a few seconds as you start the car. This is your vehicle’s way of testing the system and sending energy to all parts of the car. This is normal.
What are the most common causes for the check engine light to come on?
A faulty oxygen sensor – this sensor is designed to monitor the unburned oxygen within the car’s fuel system. It then communicates with the car’s computer to adjust the mixture of air and fuel to ensure your car is getting what it needs to run properly. If the sensor is faulty, your car will burn more fuel, and won’t run as efficiently, releasing more emissions into the air.
WHAT TO DO WHEN THE CHECK ENGINE LIGHT COMES ON?
As mentioned, if the check engine light is accompanied by more serious signs of trouble (loss of engine power, engine not working properly, etc), pull over as soon as possible, turn off the engine and look for help.
CAN YOU DRIVE WITH THE CHECK ENGINE LIGHT ON?
The answer is yes, you can continue driving if there are no immediate signs of trouble.
What to do when check engine light comes on?
The first thing you do when the check engine light comes on is observing the car’s behavior. Check if it is cluttering, has reduced power, or having any unusual sound. If you notice nothing strange, you can drive your car until you get it checked by an expert.
Why does my car have a check engine light?
The most typical reasons why the check engine light comes ON are related to injection, emissions, and combustion systems in the car. It could result from catalytic converter, oxygen sensor, bad spark plugs, and clogged and blocked injectors.
What happens if the check engine light vanishes?
If the cause of the check engine lamp on vanishes, the check engine lamp will go OFF again. This does not mean that the defect has gone. It means that the condition of the error is not there anymore. However, if this condition comes back, the lamp will come ON again. Q.
Why does my check engine light come on after refueling?
If the check engine lamp came ON right after refueling, the first thing to check is if the fuel cap is well tightened. Pull over and get the gas cap tightly in place and then restart the car. If the problem continues, it could be that the system detects leakage in the evaporative emissions system.
What is the most important warning lamp?
One of the most important warning lamps is the check engine light . This will be our topic for this article. We will get to know what check engine lamp is and how to diagnose the fault when the check engine lamp is on. We shall also learn how long can you drive with check engine light on and what can prompt the check engine light to come on?
What does ECU mean in car?
Car ECU is preprogrammed by the manufacturer on specific values. When the ECU detects an inaccurate (high/low) value, the ECU lets the check engine lamp on warning the driver that there is something abnormal is happening. These malfunctions are graded from simple, hard to dangerous ones.
How to tell if your car has low oil pressure?
Observe if there is any indication such as a low oil pressure lamp, high-temperature warning lamp, or any other indicator lamp. Shut the engine OFF and check the behavior of the car. Check if the power has reduced, the car is cluttering or having strange vibrations.
What does a red check engine light mean?
If these lights come on, pull over and shut off the engine as soon as you can. Some cars may have a red check engine light to alert you to stop right away , while a yellow light stands for investigation.
Why does my check engine light turn yellow?
The check engine light is tied into your car’s onboard diagnostics system, and it’s designed to light up (usually in yellow) whenever something goes wrong with any of the components and sensors.
Why does my car light up yellow?
The check engine light is tied into your car’s onboard diagnostics system, and it’s designed to light up (usually in yellow) whenever something goes wrong with any of the components and sensors. Problems in the electronic control system are stored in a “trouble code” to identify the source of the issue. With the use of a diagnostic computer, your mechanic can pinpoint the problem and take care of any necessary adjustments or repairs.
Can you drive a car with the check engine light on?
If the check engine light comes on while you’re driving, don’t panic! Pay attention and see if the car is driving any differently than normal. You may be wondering, “Can you drive a car with the engine light on?” Whether or not it’s safe to keep driving with the check engine light on depends on vehicle performance and the root cause of its illumination. Just be sure to have your car inspected as soon as possible after the light turns on. Don’t neglect needed engine repair!
Is it safe to drive with a check engine light on?
Whether or not it’s safe to keep driving with the check engine light on depends on vehicle performance and the root cause of its illumination. Just be sure to have your car inspected as soon as possible after the light turns on. Don’t neglect needed engine repair!