The check engine light suddenly turning on may cause ridiculously scary thoughts to enter your mind - but it does not necessarily mean that your vehicle will break down within minutes. The check engine light is simply your car attempting to notify you that something is not working properly and it requires assistance, immediately. It does not matter whether you drive anywhere from hundreds of miles every day or only a few miles two to three times a week, knowing why the check engine light came on can help you in deciding on how you will protect yourself from unnecessary potentially very expensive repair costs.

Common Reasons Why the Check Engine Light Might Come On

Bad or Loose Fuel Cap
If a fuel cap is not closed properly the pressure level in the fuel system can drop and will trigger the check engine light. Check the fuel cap and make sure is tightened properly after fill-up.

Faulty Oxygen Sensor
The oxygen sensor checks for any exhaust gases being expelled from your vehicle. If it's faulty, it will decrease your fuel efficiency and increase emission.

Worn Spark Plugs or Ignition Coils
Worn spark plugs and ignition coils are very important parts that help with the start of the engine and create a smooth flow for running the engine. If these are worn, your vehicle can have a misfire.

Catalytic Converter Problems
The catalytic converter works to reduce the damaging exhaust emissions. A bad or failing catalytic converter can further reduce your performance and increase emissions in return.

Mass Airflow Sensor Problems
The mass airflow sensor communicates with your engine in relation to how much air and air-fuel mixture to receive. A malfunction on your mass airflow sensor can further affect the performance of your vehicle along with fuel economy.

Quick fixes for you to try:

• Tighten the Fuel Cap - This is often the easiest fix and it could turn the light off after a few drives.
• Check your oil level - If it is low, it can sometimes trigger warnings. If you are low on oil, top it up.
• Listen for strange noises - Knocking, ticking, or any bizarre sounds can indicate a bigger problem.
• Make a booking to have your vehicle diagnosed - If you are still unsure, a professional scan tool will indicate the issue.

When to fix things with a professional:

After a day, if it remains illuminated or starts flaming, grab the phone and call a professional Car Mechanic. A flashing check engine light almost always indicates there's a serious engine misfire and that it's going to start damaging the catalytic converter.  

If you search online, Car Mechanic Near Me, you will likely find good reputable professionals in your area. If you are in Western Sydney, a professional Car Mechanic Fairfield will get your vehicle inspection, diagnosis and repair completed quickly so you can get back on the road safely. 

Final Tip:  You should never ignore a Check Engine Light. If you can early diagnosis can save you money on repairs and had a car that is running smoothly for many years.