How To Fix And Reset Check Engine Light Stays ON, on Car's dashboard

Is the dreaded check engine light staying ON in your car's dashboard? Don’t panic! In this comprehensive tutorial, we’ll show you *how to fix and reset the check engine light* in no time. Knowing what this warning means is crucial for your vehicle's health, and we’re here to guide you step-by-step! Whether it's a simple error or something more serious, we’ve got you covered. Tune in now and learn techniques and tips to save money on pointless mechanic visits.

How to Fix and Reset Check Engine Light (Stays ON) – Step by Step Car Guide

Is your check engine light stuck ON in your car’s dashboard? This warning light can be confusing and stressful — but in many cases, it can be fixed with simple checks and resets.

In this video, I’ll walk you through:

🔧 What you’ll learn in this tutorial:

The main reasons why the check engine light stays on (loose gas cap, faulty sensors, engine issues, etc.)

Step-by-step instructions to check and fix common causes

How to reset the check engine light safely using easy methods

When it’s safe to reset the light, and when you should visit a mechanic immediately


💡 Whether you’re a beginner or experienced car owner, this guide will help you understand your dashboard warning lights better and save money on unnecessary repairs.

⚠️ Important Warning:
The check engine light may indicate serious engine problems. While this video shows general fixes and resets, always seek advice from a certified mechanic if the light keeps coming

2. your Gas Cap Is Loose Or Faulty
Sometimes this is all it takes to illuminate your “check engine” light. It may seem silly, but a loose gas cap (or damaged gas caps) totally throws off your vehicle’s emissions systems, because fuel vapors will leak out of the gas tank. This can lead to decreased vehicle efficiency

The fix for this problem is very simple. Just check your gas cap! Is it loose? Tighten it up, and see if your “check engine” light turns off!

If your gas cap is damaged, that’s not a problem. Head to an auto parts store, and you should be able to purchase a replacement for $5-10.

3. Your Catalytic Converter Is Failing
Catalytic converters are responsible for reducing the emissions of your vehicle by converting carbon monoxide and other dangerous gases into harmless compounds. Most catalytic converters are good for the entire lifetime of your car – they typically last over 300,000 kilometers.

However, it’s possible that your catalytic converter is the source of your problems. If you’ve noticed deteriorated fuel efficiency, strange smells, and decreased performance, you may want to get your catalytic converter inspected.


It’s Time To Replace Your Oxygen Sensor
Oxygen sensors are a common cause of “check engine” lights. This sensor is located in the emission control system of your car, and is standard on all vehicles manufactured after 1980. The oxygen sensors are used to ensure that your engine is burning the correct amount of fuel, and running at peak performance. It also works with your catalytic converter to keep your emissions in check.

Over time, the oxygen sensor or O2 sensor can get covered in oil ash. This will reduce its ability to monitor the fuel (fuel system) and oxygen mix in your engine, and it will malfunction (can cause the check engine light to illuminate). Plus, it can also damage the air conditioning system.

Mass Airflow Sensor Needs Replacement
If you don’t regularly service your car’s air filter, you could be putting your mass airflow sensor at risk (and your exhaust system). This sensor helps your car’s computer inject the proper amount of fuel into the engine, increasing performance and efficiency.

If you don’t replace your air filter, this mass air-flow sensor can start to malfunction and provide incorrect information – leading to poor gas mileage, car stalling, and increased emissions. Because of this, you should replace your car’s air filter.

👉 If you find this video helpful:
✅ Like this video to support the channel
✅ Subscribe for more car tips & maintenance tutorials
✅ Share with friends and family so they can stay safe on the road

#carmaintenance
#automobile
#checkengine
#cardashboardwarnings
#warninglights
#cartips
#caradvice
#ecu
#carsensors
#dashboard
#exhaustsystem
#oxygensensor