Why is the Check Engine Light on?
The Check engine light is one of those small things in life people often dread. This is unfortunate because it exists to ensure that your car doesn't suffer any excessive damage. It will turn on at the first sign of trouble, so it is important to get to the repair shop for diagnostics as soon as it illuminates. Many times the issue will be small, but the longer you wait the worse the issue will get, as demonstrated by this first check engine light problem.
Perhaps the worst discovery that can be made if your check engine light is on is a faulty catalytic converter. This is the part of the exhaust that turns harsh exhaust fumes into less hazardous emissions and as long as you follow routine maintenance it shouldn't ever need repair, which can be quite costly. However, in order for it to fail there was likely some other trouble that would have triggered the light to come, meaning you waited to long for service!
Failed Oxygen Sensor
A failed oxygen sensor is one thing that can be detrimental to your catalytic converter. However, this sensor is quick and easy to replace or clean in most cases. This part monitors oxygen in the exhaust in order to help ensure the proper air and fuel mixture in the engine. If it isn't fixed you'll see a decrease in fuel efficiency and an increase in emissions.
Faulty Mass Airflow Sensor
This sensor tells your vehicle how much gas to add to the air/fuel mix based on incoming air. If this part becomes damaged or otherwise malfunctions you will also notice a sharp decrease in your miles per gallon. Be sure to replace your air filter as scheduled to help ensure this part doesn't fail.
Misfiring Spark Plugs
The spark plugs are what ignite the air/fuel mixture and should they misfire or be unable to properly perform their function the check engine light will come on. This is a fast and easy fix for most cars and trucks.
Broken or Loose Gas Cap
The best case scenario if your check engine light has come on is if you forgot to tighten the gas cap after filling up. A loose or broken gas cap will allow for fuel vapors to escape through the filler hose, resulting in the check engine light coming on thanks to detection of the fumes by the EVAP system.
As soon as the check engine light comes on be sure to get to your local auto repair shop for diagnostics. If you need check engine light repair in Mountain View be sure to visit A-1 Auto Tech. Our team of talented auto repair technicians will quickly diagnose the issue your car is having and have you on your way in no time. Give us a call at (650) 903-7305 to schedule an appointment for quality auto repair in Mountain View today.
A-1 Auto Tech Inc Blog
Written By Brian Corey
Published By MORBiZ
Top Qualities to Look for in a Mountain View, CA, Auto Repair Shop
Does My Car Need New Shocks or Struts?
5 Major Signs of Brake Trouble
2 Common Diesel Injector Problems
What Will Lead to a Need for Diesel Engine Repair?
Catching Up with Auto Maintenance
FAQ: Finding an auto repair shop you can trust
Is it time for cooling system repair?
4 Common Transmission Problems
Easy Ways to Damage the Engine & Transmission
5 Tips on How to Tell the Difference Between Automotive Fluid Leaks
5 Signs of Major Engine Trouble
What does colored exhaust mean
Why won't my car start? Top 4 reasons
How to get the Best MPGs
5 Smells that Mean it is Time for Auto Repair
What Causes Automotive Air Conditioner Failure in the Winter?
Top Winter Service: Brake Checks & Repair
Top Qualities of a Professional Mountain View Auto Repair Shop
Why is the Check Engine Light on?
5 Signs Your Brakes Need to Be Repaired
5 Common Sounds that Mean it's Time to Head to the Auto Repair Shop
What is Preventative Maintenance?
Why do Cars Need Oil Changes?
Does my car have an exhaust leak?
5 Signs of Cooling System Failure that Need Your Attention
5 Must Know Signs it is Time for Transmission Repair
4 Auto Maintenance Service Tips to Increase MPG's
Could Your Car Use Suspension Repair?
Why is Scheduled Auto Maintenance Necessary
4 Common Electrical Problems in Cars
3 Major Signs you Need Engine Repair
How to Find a Great Auto Repair Shop in Mountain View
4 Signs of Brake Trouble
5 Interesting Facts about Japanese Autos
4 Common Causes of Smog Check Failure