Why is the Check Engine Light Illuminated?


While many people fear the check engine light you should actually be thankful that it exists. The light is often warning you about a small problem that will be simple and relatively inexpensive to fix. It is important to bring your car to a local auto repair shop if the light comes on so that the mechanic can diagnose the issue with a special computer. Waiting too long can allow the problem to get worse and cause issues that will require much more costly repairs. These are 4 of the top reasons the check engine light may come on.

Failed Ignition Coil

If the ignition begins to struggle it will cause the check engine light to come on. The ignition coil produces the spark necessary to get your carís engine started and is subject to regular wear and tear over the years, but its life can be shortened drastically in vehicles that are constantly being turned on or off.

Faulty Mass Air Flow Sensor

This MAF sensor monitors incoming air and calculates how much of it needs to be mixed with the fuel to create the correct mixture for optimal vehicle operation. If it fails it can result in a rich fuel mixture and a drop of your fuel efficiency by up to 25 percent, so it is important to have it replaced. Sometimes it just needs to be cleaned!

Loose or Broken Gas Cap

A loose or broken gas cap can allow fuel to evaporate out of the filler hose. The light will be triggered when vehicle sensors pick up on this as it it will greatly drop your MPGs because youíre losing gas that you never got a chance to use. This is a cheap fix but a very necessary one.

Failing Catalytic Converter

The catalytic converter converts dangerous exhaust fumes from your car into less hazardous emissions. If a problem arises with this part the check engine light will come on and unfortunately, this is one of the more expensive repairs you may need to do. But if it is found that your catalytic converter has failed it was likely due to another, less expensive part that bit the dust first, which likely turned the light on much earlier. This is why it is important to have check engine light problems identified immediately.

Never wait to have the check engine light diagnosed when it comes on. If you need check engine light diagnostics in Tacoma for your BMW, Mini, Mercedes or other European vehicle bring it to Autobahn Specialists Inc. Our talented team of European auto repair technicians will quickly identify and fix issues that your car is having, getting you back on the road quickly! Call us at (253) 235-0904 to schedule an appointment for European auto repair in Tacoma today!

Autobahn Specialists Inc. Blog

Written and Published By MORBiZ

It's Time for Alternator Repair if this Happens
5 Common Warning Signs of Transmission Failure
Choosing Expert European Auto Care
Small Parts with Big Jobs
Why are Fluid Flush Services Necessary?
Does My Car Need Cooling System Repair?
4 Neat Facts about Land Rover You Didn't Know
Does My European Auto Need Brake Repair?
Top Reasons a Gas Gauge Reads Wrong
Customer Reviews of Autobahn Specialists in Tacoma, WA
Must Know Land Rover Problems
What does the Check Engine Light Tell Me?
What are the Common Signs of Engine Trouble?
Independent Mercedes Repair in Tacoma
Top Causes of No Starts
How do I know if my European car needs transmission repair?
What Causes a Car Battery to Die?
4 Signs it is Time for Suspension Repair Now
How to Find an Great Auto Shop for your German Car
Easy Tips to Restore Fuel Efficiency
Top Signs Your Car Needs Brake Repair Today!
4 Signs Your European Car Needs Suspension Repair
Top 5 Reasons to Use an Independent European Auto Repair Specialist
Must Know MINI Problems
4 Steps to Finding a Great European Auto Repair Shop
Do I Need to Replace the Alternator?
5 Signs it's time for European Engine Repair
Why are Oil Changes so Important for My European Vehicle?
Does My European Car Need Transmission Service? These Signs Say Yes!
Is it Time for Clutch Repair?
What car problems create strange noises?
What does Colorful Exhaust Represent?
5 Ways to Identify Automotive Trouble
What is a Dealership Alternative Auto Repair Shop?
Common Volvo Problems You Need to Know
4 Auto Electric Problems that Prevent Starting
Why is Routine Auto Maintenance Necessary for European Cars?
5 Signs it is Time for Brake Service
What's a tune up?
5 Auto Maintenance Services to Keep Your Vehicle Running Great for Miles & Miles
How do I know if my car needs suspension repair?
Common Questions about Servicing European Vehicles
5 Symptoms of Cooling System Trouble
How do I know if my car needs engine repair?
Do I Need European Vehicle Inspection Before I Buy a Used Car?
These 6 signs of trouble mean you need European transmission repair now!
4 Must Know Electrical Problems with the Audi A4
How to Find a Quality European Auto Repair Shop
The Benefits of Using OEM Parts for European Auto Repairs
5 Signs Your Car Needs Transmission Repair
Does my car have an exhaust leak?
Why Should I Use a European Auto Specialist?
Why is the Check Engine Light Illuminated?
Why do Vehicles have so many Computers?
5 Common Mini Cooper Problems
Common Problems with Vehicle Electrical Systems
The Importance of Regular Oil Changes
4 Common Mercedes Benz E Class Problems to Watch Our For
What is Scheduled Auto Maintenance?
Debunking European Vehicle Maintenance Myths
Signs Your Car Needs Ignition Repair
5 Signs Your Car Needs Brake Repair
4 Common Problems with 3 Series BMWs
How to Select a Quality BMW Repair Shop