Why is My Car Engine Light On?
Causes of an Illuminated Engine Light
There are many reasons why your car’s engine light may be on. Some of the most common causes include:
- Loose or faulty gas cap
- Oxygen sensor failure
- Catalytic converter failure
- Mass airflow sensor failure
- Spark plug or ignition coil failure
- Vacuum leak
- Fuel injector failure
What to Do When the Engine Light Comes On
If your car’s engine light comes on, it’s important to take action as soon as possible. Ignoring the engine light can lead to serious problems, including engine damage. Here are some things you should do when the engine light comes on:
- Check the gas cap. Make sure the gas cap is tight and secure. A loose or faulty gas cap can cause the engine light to come on.
- Have the code scanned. AutoZone and other auto parts stores offer free code scanning services. This will tell you what the engine light code is, which can help you determine the cause of the problem.
- Take the car to a mechanic. If you’re not able to diagnose the problem yourself, take the car to a mechanic. The mechanic will be able to diagnose the problem and make the necessary repairs.
FAQs
Here are some frequently asked questions about the engine light:
- What does it mean when the engine light is on?
- What should I do if the engine light comes on?
- Can I drive with the engine light on?
- How much does it cost to fix the engine light?
The engine light is a warning light that indicates a problem with your car’s engine. It can be caused by a variety of factors, including loose or faulty gas cap, oxygen sensor failure, catalytic converter failure, mass airflow sensor failure, spark plug or ignition coil failure, vacuum leak, and fuel injector failure.
If the engine light comes on, you should check the gas cap first. If the gas cap is tight and secure, have the code scanned at an auto parts store. This will tell you what the engine light code is, which can help you determine the cause of the problem. If you’re not able to diagnose the problem yourself, take the car to a mechanic.
It is not recommended to drive with the engine light on. Ignoring the engine light can lead to serious problems, including engine damage.
The cost of fixing the engine light will vary depending on the cause of the problem. Some repairs, such as replacing a loose or faulty gas cap, can be done for a few dollars. Other repairs, such as replacing a catalytic converter, can cost hundreds of dollars.
