Five Most Common Engine Light Causes

Believe it or not - I got this information from an article on Lifehacker. But don't worry, they're wise people over there and they do know what they're talking about. Here is a list of the five most common reasons why your engine light will turn on, and what to do about it.

1. Replace Oxygen Sensor

What it is: This is the part of your vehicle that helps monitor how much fuel is burned; "Over time, the sensor gets covered in oil ash and it reduces the sensors ability to change the oxygen and fuel mixture. A faulty sensor not only reduces gas mileage, it also increase emissions.

How to fix it: This is something that needs to be taken care of right away, but you can do it yourself to avoid extra costs (taking it to a shop can cost you about $200). Check out your owner's menu, which should show you how to unclip it and replace it with a new one. For a video on how to do it yourself, click here.

2. Loose or Faulty Gas Cap

What it is: When your gas cap is loose or cracked, it causes fuel vapors to leak out.

How to fix it: As long as your car isn't feeling jerky and is seemingly running smoothly, this is the first thing you should check. Pull over and tighten it, and if that doesn't solve your engine light problem, you can purchase a new gas cap for about $3 - just take the old one off, and put the new one one.

3. Replace Catalytic Converter

What it is: Your catalytic converter's job is to reduce exhaust gases, so when it's faulty you may notice a decrease in gas mileage, or your car will fail to accelerate when you push the gas pedal.

How to fix it: Unfortunately, this isn't really a do it yourself option, and can be very pricey (up to $2,000). Ultimately if it fails completely your car will stop running. And until it's fixed your gas mileage will suffer immensely.

4. Replace Mass Airflow Sensor

What it is: Based on the air coming through the engine, the mass airflow sensor tells the car's computer to add the proper appropriate of fuel. Problems occur when your air filter is installed improperly, or badly needs a change.

How to fix it: You can drive with this issue without real risk, but your gas mileage will decrease and your vehicle will stall frequently. This typically costs about $200-$300, and while it's possible to do on your own, it's better to have it done by a mechanic so as to not run into the issue again.

5. Replace Spark Plugs and Wires

What it is: Your spark plugs and wires should be replaced about every 25,000-30,000 miles, and never more than 100,000 miles. "The spark plug seals the combustion chamber and provides a gab for a spark to jump across and initiates combustion in your engine. When the plugs are failing, the spark plugs misfire. You'll feel a little jolt in your car's acceleration when this happens."

How to fix it: This is a simple enough fix to do on your own, and should be done immediately for the betterment of your vehicle. Watch the video below for how to do it yourself.

To read the full article, click here to go to Lifehacker.