4 Common Reasons the Check Engine Light Comes On
There are many, many reasons that the check engine light may come on in you car, truck or SUV. A malfunctioning sensor, low tire pressure, low transmission fluid and so much more will cause the light to come on. But some reasons the check engine light comes on are much more common. When the light glows it doesn't always foreshadow an expensive repair, sometimes the issue can be fixed with just the turn of a wrist. Here are 4 common reasons the check engine light is on, and for proper diagnosis be sure to visit your local auto mechanic.
Broken or Loose Gas Cap
A loose or faulty gas cap will allow gasoline to evaporate out of the filler hose, causing the check engine light to come on. To avoid having a potentially expensive diagnostic test to find the reason the light is illuminated is because you forgot to tighten the gas cap, make sure it is snug every time you fill up.
Faulty Mass Air Flow Sensor
Your vehicle runs on a mixture of gasoline and oxygen and the mass air flow sensor monitors and regulates the air coming into the engine to make sure the mix is correct. If the sensor malfunctions the check engine light will glow. The repair is generally inexpensive but very important to take care of, as a bad MAF sensor can drop your fuel efficiency by 25 percent or more!
Bad Ignition Coil
To get your vehicle started the ignition coil uses electricity from the battery to produce the spark necessary to get the pistons pumping. Over the years the coil will wear down with regular use but its life can be shortened extensively due to operation in extreme temperatures.
The catalytic converter is the part of your exhaust system that converts dangerous exhaust fumes to less harmful emissions. It doesn't often fail and if it does it is generally because something else went haywire first, which likely triggered the check engine light long before the catalytic converter would have. Fixing the catalytic converter can be quite expensive, so be sure to have the check engine light diagnosed as soon as it turns on to avoid more costly repairs.
Don't delay in having the check engine light diagnosed. It will usually first come on because of a small issue that could turn into a major problem. For a check engine diagnosis Palo Alto visit the expert mechanics at The Car Doctor. The professional technicians at The Car Doctor can identify and repair any issue with your vehicle, from brake repair, transmission service, oil changes, engine rebuilds and much more, they can do it all! Call The Car Doctor today at (650) 492-6853 to schedule an appointment for quality auto repair in Palo Alto!
The Car Doctor Blog
Written and Published By MORBiZ
Brake Failure: 7 Warning Signs
Why Is It Important to Always Follow Your Oil Change Schedule?
8 Easy Ways to Improve Fuel-Efficiency
How Come My Car Won't Start? Here Are 6 Possibilities
Top 7 Signs of Alternator Trouble
Common Signs of Serious Engine Trouble
Bad Driving Habits that Can Destroy Your Transmission
When to Suspect a Suspension Problem
Important Benefits of a Coolant Flush
7 Reasons the Check Engine Light Illuminates
Always Keep Current with these 6 Important Auto Maintenance Tasks
6 Warning Signs of Cooling System Failure
Recognizing Brake Trouble
6 Symptoms of a Transmission Problem
Expert Auto Repair in Palo Alto, CA
Stay Up to Date on these 6 Important Fluid Flushes
7 Ways to Boost MPGs
6 Signs that You Could Need Alternator Replacement
6 Problems that Can Prevent a Car from Starting
Top Signs of Suspension Trouble
Why is the Check Engine Light On?
Does This Mean it is Time for Auto Repair?
Great Traits of a Professional Auto Repair Shop in Palo Alto
The Sounds of Car Trouble
Top Signs of Big Trouble Under the Hood
The Best Ways to Maintain a Safe Car
Why does my vehicle need oil changes every 3,000 miles?
Is it Time for a Tune Up?
The Importance of Fleet Vehicle Maintenance
Is Your Car Up to Date with These Auto Maintenance Services?
Is it Time for Drive Belt Replacement?
What is Cooling System Service?
What Triggers the Check Engine Light?
Schedule Brake Repair as Part of Routine Auto Maintenance
Why Does My Car Need Scheduled Auto Maintenance?
Restore MPGs with Routine Auto Maintenance
Top Qualities of a Dealership Alternative
Could Your Vehicle Benefit from a Wheel Alignment
How to Tell if it is Time for Transmission Service
Is Time for Major Engine Repair?
What is a Fluid Flush?
Keeping Up with Scheduled Auto Services
What is Factory Auto Maintenance?
3 DIY Auto Maintenance Tips
Top 5 Reasons Your Car Won't Start
Creating of a Fleet Vehicle Preventative Maintenance Plan
Does this mean I need brake repair?
5 Times you Need to Visit an Auto Repair Shop
Are You Keeping Up with Oil Changes?
6 Tips for Raising Your Miles Per Gallon
Finding Top Notch Auto Repair Services
How do I know if I Need Suspension Repair?
Easy Tips to Extend the Life of Your Car
What is Scheduled Auto Maintenance?
How Important is Tire Pressure?
5 Signs of a Failing Ignition
3 Signs it is Time for Clutch Repair
Does my car need new tires? Here's how to tell!
What is Leaking from my Car?
The Major Benefits of Quality Replacement Auto Parts
Top 7 Auto Electric Problems
How can an Auto Repair Shop become a NAPA AutoCare Center?
5 Transmission Troubles that Require Repair
5 signs it's time to make an appointment for brake repair
What Causes a Car Battery to Die?
Hard Starting: Does my car need a new starter motor?
Does my Car need an Engine Rebuild?
Fuel Delivery Failure: Common Fuel System Repairs
How to find a great auto repair shop in Palo Alto
Common Reasons the AC isn't Cold
Pee-Yew! The Smells of Car Repair
Why do Vehicles have so Many Computers?
What Does Colored Exhaust Smoke Mean?
Does My Car Need an Alignment?
Bad Vibes: 3 Shakey Signs Your Car Needs Auto Repair
5 Signs of Alternator Failure
3 Symptoms of an Exhaust Leak
Why Does My Car Smell Funny?
Help! My Car Won't Start
3 Signs it's Time for Exhaust Repair
Why is My Car Loud?
4 Common Reasons the Check Engine Light Comes On
How to Save Gas and Money this Summer
Time For Brake Replacement? 6 Ways to Tell
6 Signs Your Car Needs Suspension Repair
Timing Belt Replacement
Understanding 30/60/90K Maintenance
4 Signs You Need Brake Service or Brake Repair
How Important are Regular Oil Changes?
Six Signs of Transmission Trouble
Preparing for Winter Driving