The check engine light is a signal that the onboard diagnostics system (or OBD II) has detected a malfunction in the vehicle’s emissions, ignition, fuel or exhaust systems.
What could cause the check engine light to come on?
The light could be a minor issue, such as a faulty gas cap, or it could mean something more serious, such as a misfiring engine. … The check engine light — more formally known as the malfunction indicator lamp — is a signal from the car’s engine computer that something is wrong.
Is it safe to drive with check engine light on?
Can you drive a car with the engine light on? It’s okay to drive for a few miles, but be sure to schedule an inspection of the engine as soon as possible. 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.
Should I be worried if my check engine light is on?
If the check engine light is illuminated, you can keep driving but you should get the car checked out as soon as you get a chance. A flashing check engine light means that you need to pull over immediately as your vehicle has a serious issue that could cause severe engine damage.
Can check engine light turn itself off?
A check engine light will shut itself off if the condition that caused it is remedied. … If you then did a bunch of highway driving before changing the oil, the specs may have dropped back into the normal range, causing the light to go off.
Can low oil cause the check engine light to come on?
Low oil pressure: If your car is low on oil, it can cause your check engine light to go off. This is often shown in its own glowing light along with the check engine light on the dashboard.
What to do if engine light is on?
What to Do About the Check Engine Light
- Look for a serious problem that requires immediate attention. Check your dashboard gauges and lights for indications of low oil pressure or overheating. …
- Try tightening your gas cap. …
- Reduce speed and load. …
- Use built-in diagnostic services, if available.
Is a solid check engine light serious?
A technician needs to diagnose the concern at the absolute earliest convenience to prevent damage to your car. A flashing Check Engine Light is serious business. … A solid Check Engine Light can mean something like a loose gas cap, or it can indicate a more in-depth problem like a fuel, timing, or transmission issue.
How do I check my check engine light?
Check the codes yourself
Bluetooth OBD2 Scan Tool for Android: Connect this device, then open an app like Torque Pro on your Android tablet or phone, which connects to the device via Bluetooth. You can then get the codes, reset the check engine light, along with a host of other things.
Where can I go to get my check engine light checked?
Bring your car to an auto parts store and have the code read for free. The free check engine light diagnosis is good because if the code turns out to be for something minor, you might even be able to fix it yourself.
Can Autozone reset check engine light?
Yes they can make the light go out temporarily. They do it by using a scanner to erase the readiness monitors. Then until the readiness monitors reset (might be days, weeks or months) the light will stay off. That is, unless there is a hard failure then the light will come back when the car is restarted.
Why is my check engine light on but no codes?
One main reason that a check engine light comes on with no code being stored is that there is a software error. This is often the result of something being wrong with the OBD reader that the driver, parts store, or mechanic shop is using. Most frequently, the software errors stem from a low-level OBD reader being used.
How can I tell if my gas cap is bad?
Symptoms of a Bad or Failing Gas Cap
- Cap does not tighten properly. One of the most common symptoms of an issue with the gas cap is a cap that does not tighten properly. …
- Fuel smell from the vehicle. Another symptom of a possible issue with the fuel cap is a fuel smell from the vehicle. …
- Check Engine Light comes on.
How long does it take for the check engine light to go off after replacing gas cap?
The check engine light should go off after you drive for several minutes if the light was caused by a loose gas cap. Pay attention to the dashboard after the check engine light experience. If you find that the light keeps coming on, and goes off again once you tighten the gas cap, then your gas cap is too loose.