Why is the Check Engine Light on?


Why is the Check Engine Light on?When the check engine light illuminates too many drivers ignore it, either because they can't tell there is a problem with how their car is performing or because they fear what it may mean. However, by putting off diagnostics and repairs the issue will only get worse, meaning the repair costs will grow too. If your car's check engine light has come on do not hesitate to get it checked out. The following are a few of the most common reasons that little orange light will turn on.

Loose Gas Cap

If you fail to tighten the fuel cap after filling up, or if the cap is cracked or otherwise broken, it could allow fuel vapors to evaporate out of the filler hose, meaning you're wasting gas the engine didn't even get a chance to burn.

Misfiring Engine

Misfiring can occur for a variety of reasons, but it is important to resolve this issue quick, as it will drastically reduce your fuel efficiency and engine power. Common reasons for misfiring includes worn spark plugs or bad ignition coils.

Mass Air Flow Sensor

The mass air flow sensor is located near the front of the vehicle. It measures incoming air and calculates how much needs to be mixed with the fuel to ensure a proper running vehicle. If this sensor malfunctions the light will come on because it will generally result in a vehicle that runs rich.

Oxygen Sensor

On the other end of the vehicle is the oxygen sensor. It works similar to the MAF sensor but it monitors oxygen in the exhaust fumes. This too will calculate how much air needs to be mixed with the gas. If it fails the car could run rich, meaning it burns excessive gasoline. Burning too much gas can cause damage to the catalytic converter.

Failed Catalytic Converter

If it is found that the catalytic converter has gone bad it is likely that the check engine light has been on for some time. Replacing the catalytic converter, which turns harmful exhaust into less hazardous emissions, is one of the most expensive types of repair for a car. It generally will not fail unless some sort of other problem occurred first, such as any of the above issues, which would have triggered the check engine light first.

Don't ignore the check engine light! If you need check engine light repair in Phoenix head to Greg Clark Automotive Specialists. Our team of superior auto repair technicians will ensure that your vehicle is running great when it leaves our shop! To schedule an appointment for expert auto repair in Phoenix call Greg Clark Automotive Specialists at (602) 353-7431 today

Greg Clark Auto Specialists Blog

Written and Published By MORBiZ

Watch Out for these 7 Signs of Alternator Failure
What are common problems that cause no-start?
Common Automotive Fluid Leaks
How to Maximize Fuel Efficiency
Top Signs of Suspension Trouble
4 Common Diesel Engine Problems
How to Maximize Fuel Efficiency
Does This Mean I Need Auto Repair?
Does My Car Need Radiator Repair?
Why is the Check Engine Light on?
Common Signs of Engine Trouble
Does My Car Need Transmission Service?
6 Signs that it's Time for Brake Repair
Caring For Your Car
Top Signs of an Exhaust Leak
Customer Reviews of Greg Clark Automotive Specialists in Phoenix
Is Your Car up to Date with Oil Changes?
Four Services that Keep Your Car Safe to Drive
5 Signs it is Time for a Wheel Alignment
5 Traits of a Top Phoenix Auto Repair Shop
4 Signs Your Car Needs Suspension Repair
Three Car Problems Diagnosed by Sound
5 Signs You Should Bring Your Car to the Auto Repair Shop
Don't Skip Scheduled Auto Maintenance
Do I Need Automatic Transmission Repair?
What's Leaking from my Car?
Top Qualities of a Phoenix Auto Repair Shop
Simple Tips for Increased MPGs
Colored Exhaust Indicates a Need for Engine Repair
Signs of a Bad Ignition Switch
Do I Need Brake Repair?
Phoenix Engine Repair
Expert Auto Repair in Phoenix
What Do I Do When the Check Engine Light Comes On?
When You Need AC Repair
Oil Change in Phoenix
Finding the Best Auto Maintenance
Expert Wheel Alignment
Is It Time for Transmission Service?
Free Computer Code Readings
The Importance of Top Quality Brake Repair
The Best Engine Repair in Phoenix
Where to Turn When You Need Auto Repair in Phoenix
Getting Expert Help With Light Diesel Repair
Keep Cool With AC Repair
Ensuring Your Wheel Alignment is Right
Don't Forget Your Routine Oil Changes!
Can We Help You With Transmission Service?
Clues That it Might Be Time for Brake Repair
3 Signs You May Be in Need of Engine Repair
How to Find a Great Dealership Alternative for Auto Repair