Top Triggers of the Check Engine Light
When it comes to identifying car trouble there are few things that make a driver's heart sink as fast as the check engine light coming on. While you may fear it, this light should actually be thanked, as most check engine light issues start out pretty small. As long as you have diagnostics and repairs completed quickly, you generally won't have much to worry about in terms of expensive repairs or hefty downtimes. Let's take a peek at some of the most common triggers of the check engine light.
Broken Gas Cap
Believe it or not a broken or loose gas cap can actually cause the check engine light to illuminate. This is because the EVAP system, which detects fuel vapors, can trigger the light should those vapors start to escape out of the filler hose. Always be sure to tighten your gas cap after every fill up!
The oxygen (O2) sensor is integrated into the exhaust system to measure how much oxygen is in the emissions. This reading helps calculate the proper air/fuel mixture for the engine. If the O2 sensor fails it could result in excessive fuel being burnt, which could lead to a much more expensive problem with the catalytic converter -- more on that below.
Mass Air Flow Sensor
The mass air flow (MAF) sensor performs a similar function to the oxygen sensor, in that it's measurements help dictate the air/fuel mix, but it calculates how much of the incoming air should be mixed with the gas.
In most cases of engine misfiring you'll be able to tell without the assistance of the check engine light, as the car will generally idle very rough or even stall. Misfiring occurs when one or more spark plugs are not igniting the air and fuel mix, or the timing is off. Another cause of misfiring is faulty ignition coils.
Failed Catalytic Converter
As mentioned, a failed oxygen (O2) sensor could lead to damage of the catalytic converter due to excessive fuel being burnt. This part is one of the most expensive parts of a car to replace, but it won't go bad on its own in most cases. This is why it's crucial to visit the auto shop as soon as the check engine light comes on.
When the check engine light comes on head to the auto repair shop immediately. For professional check engine light repair in Lancaster visit the team at McKonly's Garage. We strive to provide fast and effective auto repair for all makes and models. Give us a call at (717) 208-8210 to schedule an appointment for superior auto repair in Lancaster or the surrounding area today!
McKonly's Garage Blog
Written and Published By MORBiZ
What is Leaking From My Car?
When Should I get New Tires?
Top Causes of No Starts
3 Symptoms of a Failing Clutch
Top Triggers of the Check Engine Light
Important Auto Maintenance that Gets Forgotten
Do Not Ignore Brake Trouble
5 Services that Keep Your Car Safe to Drive
5 Reasons to Never Skip Scheduled Auto Maintenance
The Benefits of Modern Computer Diagnostics
Is Your Car Up To Date with Oil Changes?
When was the Last Time your Car had a Wheel Alignment?
Is it Time for Radiator Repair? 3 Things to Check For
Customer Reviews of McKonly's Garage in Lancaster, PA
Top Fuel Delivery Problems
4 Common Signs Your Car Needs Engine Repair
What Happens if You Ignore Signs of Car Trouble?
Expert Auto Repair in Lancaster, PA
4 Common Signs of Starter Motor Failure
Easy Ways to Improve MPGs
Does my Car Have an Exhaust Leak?
How to Tell if it is Time for Brake Repair
5 Common Check Engine Light Problems
Common Auto Electric Problems You Should Know
4 Causes of a Failed Emissions Test
How to Know if You Need Cooling System Repair
Should I go to the Auto Repair Shop if...
5 Signs Your Vehicle Needs a Wheel Alignment
Must do: End of Summer Auto Maintenance
My Car Won't Start, What Could it Be?
Is it Time for Transmission Repair or Service?
When does my car need a tune-up?
Is it Time for New Shocks or Struts?
Top Signs of Alternator Failure
What's that Noise? 4 Sounds that Mean You Need a Repair
This Means Your Need Brake Repair Now
What does that Light Mean? Common Dashboard Warning Lights
4 Signs of a Dangerous Exhaust Leak
4 Routine Auto Services to Never Skip
This Could Mean it is Time for Engine Repair!
5 Auto Maintenance Services Never to be Skip
Terms to Know When Buying New Tires
How to Prepare Your Car for Your Summer Road Trip
What Exactly is a Tune Up?
FAQ: Emissions Testing & Repair
Why is the Check Engine Light On?
Is it Time to Replace the Timing Belt?
5 Smells that Mean it is Time for Auto Repair
Top Symptoms of Brake Failure You Need to Know!
Do These 4 Noises Mean I Need Auto Repair?
Does my car need a new alternator?
How to tell if your Car Needs Clutch Repair
Car Won't Start? 4 Signs Your Starter has Failed
4 Signs your Vehicle Needs Suspension Repair
3 Reasons to Never Skip Oil Changes
5 Signs You Need Transmission Repair
Easy Maintenance Ideas to Improve Fuel Efficiency
5 Reasons Your Car Will Likely Fail an Emissions Test
Common Troubles of the Fuel System
Is it Time for Power Steering Repair?
4 Signs of Cooling System Trouble
10 Tips to Prepare Your Vehicle for Winter
What is Factory Scheduled Auto Maintenance?
The Importance of Tire Maintenance
My Car Won't Start... What's Wrong?
A Guide to Vehicle Fluid Leaks
3 Signs Your Car Needs Engine Repair
5 Signs Your Car Needs Brake Repair