Akin Chaktty
Check Engine Light
The check engine light (CEL), also known as the malfunction indicator lamp (MIL), is typically a warning light on your vehicle’s dashboard that shows that there’s an issue with your car engine or some of its components.
It’s part of the Onboard Diagnostics (OBD) system, designed to monitor the performance of a vehicle’s engine and emissions systems.
Therefore, when Check Engine Light flashes then stops or continues blinking without anything happening to your car, you just hit a pothole or your car is shaking, you should stop, Techpally
What Does the Check Engine Light Mean exactly?
The CEL is triggered to show warnings to the driver when the vehicle’s computer system detects a problem in the car engine, transmission, or emission control systems as I’ve said.
It could be minor issues such as a loose gas cap to serious mechanical failures such as a failing catalytic converter, take note.
Light Color and Behavior
Steady Light
When it shows steady Light, itIndicates a less urgent issue.
The vehicle can usually still be driven but should be checked soon.
Flashing Light
When your check engine light is blinking, it signals a severe problem, such as a misfire, which can damage the catalytic converter or other critical components, therefore, you should stop driving immediately and seek repair, Akin Chaktty advised.
Common Causes of the Check Engine Light
Loose or Faulty Gas Cap
Minor issues like a loose or damaged gas cap can cause fuel vapors to leak, triggering the CEL.
Low-Quality Fuel
Also, poor fuel can cause engine misfires or irregularities.
Faulty Oxygen (O2) Sensor
Monitors exhaust gases to optimize fuel-air mixture.
Mass Air Flow (MAF) Sensor Issues
Measures the air entering the engine for proper fuel injection.
Spark Plug or Ignition Coil Failure
Can cause misfires or reduced engine performance.
Catalytic Converter Failure
Responsible for reducing harmful emissions; its failure can lead to decreased performance and increased emissions.
Transmission Problems
Issues with the transmission system can also trigger the CEL.
Vacuum Leaks
A vacuum leak can affect engine performance and emissions.
Emissions System Issues
Problems with the EVAP system (Evaporative Emission Control System) may cause the CEL.
How to Diagnose the Check Engine Light
First, try to tighten the gas cap or replace it if damaged.
Restart your car after filling up with quality fuel.
Use an OBD-II Scanner, connect the scanner to the vehicle’s OBD-II port (usually under the dashboard).
Read the trouble code(s) displayed (e.g., P0420 for catalytic converter issues).
Research the code or consult a professional for an explanation.
For professional diagnostics, you should visit a mechanic or dealership for a thorough diagnosis if the CEL persists or you cannot identify the issue.
Can You Drive with the Check Engine Light On?
If it’s just a steady light, it’s safe to drive if you’re on a short journey. However, avoid long journey when you have this issue, and try to get it fix.
When there’s flashing light, and maybe your car starts shaking, stop the car so you don’t worsen the problem.
You can incur more repair cost if you continue to drive such car.
How do you Reset the Check Engine Light
You can simply resolve the underlying issue causing the CEL. Most modern vehicles reset the light automatically after a few drive cycles.
You can use the OBD-II scanner to clear the code after fixing the problem.
Simply disconnect the battery for a few minutes, not recommended for all vehicles though, according to chaktty at Techpally Auto.
NOTE: If you reset the check engine light without addressing the problem, it may cause it to return.
Preventing the Check Engine Light
Change the car engine oil regularly
Regular spark plug replacements, and filter checks.
Keep the fuel and air systems clean
Avoid low-grade or contaminated fuels.
Inspect the gas cap, hoses, and other visible engine components for wear or damage.
Common Myths About the Check Engine Light
The car will stop working immediately – This is not always true.
A steady CEL often allows the vehicle to continue operating.
It’s always an expensive repair – Many issues, like a loose gas cap or faulty sensor, are not expensive to fix.
You can ignore it if the car runs fine – Ignoring the CEL can lead to severe and costly damage over time.
Conclusion
The check engine light is an essential warning system that shouldn’t be ignored.
Whether it indicates a minor or severe issue, diagnosing and addressing the CEL promptly can save time, money, and potential damage to your vehicle.
Regular maintenance and inspections can prevent the light from coming on unnecessarily and ensure your car runs smoothly.
What Country are you posting from? : Nigeria
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