What Does A Check Engine Light Mean?
What Does a Check Engine Light Mean?
The check engine light is one of the most important lights on your dashboard. It indicates problems that range from minor to severe, with the usual culprits being your car’s emission, fuel, or mechanical system.
When this light appears, it is a message from your car’s inbuilt diagnostic system that something is wrong somewhere. The OBD keeps an always-on tab on all major elements to pursue ultimate performance, from valuable engine components, transmission systems, exhaust systems, and fuel functions.
Common Reasons for a Check Engine Light
- Faulty Oxygen Sensor
This checks the amount of unburned oxygen in the exhaust system. If it goes bad, your car will waste more fuel than it needs to, which reduces efficiency and increases emissions.
- Defective or Loose Gas Cap
It may sound little, but a loose or cracked gas cap can surely trigger the check engine light on by allowing fuel vapors to escape and probably disrupting the pressure in the fuel system.
- Catalytic Converter Failure
Your catalytic converter reduces harmful emissions. If it becomes damaged or fails, the check engine light will go on, and your car may fail emissions tests.
- Worn Out Spark Plugs Or Ignition Coils
Spark plugs ignite the air-fuel mixture entering your engine. With degraded spark plugs, or conversely, when an ignition coil goes bad, they can cause your car engine to misfire and make performance worse, along with increased levels of emissions.
- Mass Airflow Sensor Issues
The MAF sensor checks the amount of air entering your engine. A failure will cost you more in terms of poor fuel economy or stalling.
What to Do When the Check Engine Light Goes On
The following are steps you should take when your check engine light comes on:
- Check the Gas Cap: Start with the easiest solution first. If your gas cap looks damaged, tighten or replace it.
- Pay Attention to Performance: Also, notice any unusual symptoms, such as stalling, reduced power, or strange noises. These could indicate a more serious problem.
- Schedule a Diagnostic Test: Bring your car to the professional at M & R Auto. Our modern diagnostic tools accurately determine exactly what problem your vehicle is experiencing and save time and money.
- Don’t Delay Repairs: Ignoring the issue could lead to more extensive and expensive repairs down the road.
Have Your Check Engine Light Issue Fixed Today
If that annoying light illuminates your dash, whether yellow or red, do not wait; make that appointment now for a diagnostic exam with us. Call us at (650) 325-3900 or simply pay a visit to our shop in Menlo Park for any questions concerning this service. Allow us at M&R Auto to help take care of your car or truck so there won’t be a single thing you feel concerned about while on the roadways.
