Check Engine Light Went Off After a Week – What to Do Next

When the “check engine” light turns up, it typically indicates that there is a problem. It may be a minor problem however it could also mean something more grave. But, in most cases, you’ll need to bring your vehicle to an expert for it to be identified and the issue addressed to prevent any the possibility of further damage. However, before you have the opportunity to fix the problem you’ll notice that the light on your dashboard went off without having to do anything. You might be asking what causes the check engine light to shut off on its own and is the problem resolved?

This article will explain more precisely if the check engine light could be turned off by itself, and the reason. Also, what to do following. Continue reading!

Do you think the You Check Engine Light be turned off?

The check engine light will be turned off automatically when the issue which caused the light is fixed. The computer in your car is constantly performing tests to detect issues. The check engine light will appear on your dashboard when your car is unable to pass two test in succession. Therefore, if you see the light on your dashboard that indicates check engine is turned off its own way, it indicates that it has completed the test.

Before you get into the reason this check engine lamp goes off automatically first, you must understand the reasons why it first started turning on.

What does”Check” Engine Light What does the Check Engine Light

This check engine indicator is among the most commonly used lights on the dashboard.

Your car’s computer is constantly performing tests as part of the On-Board Diagnostic system. It is able to monitor both continuously of engine’s timing, misfires and timings as well as the non-continuous monitoring of any other components that may raise emissions, like the catalytic converter, or a small leaks of vapor.

In car conversations mechanics and car lovers frequently discuss “two trip monitor” in discussions about warning lights.

It’s when an engine check light, typically either orange, yellow, or amber, may pop onto your dashboard when your vehicle does not pass two tests in one row.

But, it’s impossible to determine the reason the engine light has been illuminated and, if you want to find out the cause it is best to consult a professional to diagnose the problem.

Why did my check engine Light Go off on Its Own?

Usually that check engine indicator remains on for as long as source of the issue is not resolved and your vehicle continues to fail tests.

If it’s due to an EVAP leak in the system or an open cap on the fuel that allows fuel vapors escape from the system, or a catalytic converter malfunction or an improper air-fuel ratio, it is likely that the light will remain in place until the issue is addressed.

But, many people believe that a reset of their check engine light is required, but in some cases it’s not necessary to perform anything at all.

Let’s say the check engine light turns on. After about a week, you are planning to take your vehicle to an auto mechanic however, on the way to the shop you notice that the light for check engine came off on its own.

This means that during the journey, your car’s diagnostic system ran three tests which your car was able to pass.

Great! You go home and think that you don’t have a issue, which could be the case. However, it’s always recommended and recommended that you bring your vehicle to the mechanic to get diagnosis.

The light was caused by something that caused it to light up in the first place and technicians are able to identify the problem codes using the help of an OBD scanner to find out the reason the reason for the failure of the test.

A different scenario to consider is you noticed that the engine check light goes off when you filled up with gasoline, the source of the light could be the gas cap was loose.

The Evaporative Emission Control System (EVAP) within your vehicle checks the pressure inside the tank of fuel during the drive and also examines for leaks, letting you know when there are gas fumes coming out of.

The cap for gas is sealed, making the tank airtight however, if there’s pressure leakage within your tank then your check engine warning light may come up.

Perhaps you’ve have noticed that your vehicle smelled like gasoline recently. However, after you put back your gas cap may have made sure you tightened it enough to seal it correctly and then the light turned off.

Is it safe to drive with the Check Engine Light on?

Usually, when a warning light is illuminated, you feel an unpleasant sensation in your stomach. However, does that suggest that you’re not safe to drive?

When the “check engine” light turns on and you observe any changes in the way your vehicle operates, it’s advised to stop the car and seek help. If the light appears to be off and there is nothing to be amiss it’s most likely due to an unintentional mechanical issue or a sensor that is malfunctioning. It’s safe to drive on without further damage.

However, the light could cause your car to go into the security function called ” limp mode.” It could cause the parts that aren’t essential to your car to turn off and limit the vehicle’s performance. This is to ensure that you don’t damage or damage any engine components.

Whatever the case, it is important to investigate the cause or issue whenever you can. A lack of stinginess and not paying attention to the issue is rarely beneficial at the end. It’s not a good idea to go about in limp mode more than is necessary.

Why a mechanic isn’t able to see the problem

If the indicator light is off, and the mechanic performs diagnostics , but fails to detect any error codes, it’s due to the fact that your car has passed this same test over 40 times. There aren’t all models of cars that include this feature, but certain manufacturers like Audi and Volkswagen have this feature.

Should I Still Have My Car Inspected Even if The Check Engine Light has turned off

It’s recommended to have your car checked , even when the light is off. It’s been mentioned that something could have caused the light to come on at all, and it’s an excellent idea to search for any trouble codes.

How can I identify the problem Myself?

Yes, identifying the issue yourself using the aid of an OBD scanner is feasible. They’re simple to use and they are available at around $100.

Here’s a step-by-step guide on How to Use the OBD scanner for newbies from

However, the majority of auto parts shops (such such as AutoZone, Advance Auto Parts and Pep Boys)will provide a no-cost diagnostic code reading, or permit you to take a loan of an OBD scanner and instructions for no cost.

Here are some trouble codes to look out for.

  1. Oxygen Sensor Code (P0171-P0175): You receive this error message when it finds a problem within the sensor for oxygen. This sensor informs the computer of your engine the level of oxygen present within the exhaust. The errors (P0171, P0173and (P0174, P0171,) suggest you have a low air-fuel mix. (P0172 or P0175) indicates that you have a very rich mixture of air and fuel.
  2. Engine misfire code (P0300-P0305):If you encounter any error code between P0300-P0305, your car’s ECU has discovered that your car’s cylinders may be failing to function properly and may be causing problems. Spark plug issues or faulty ignition systems, or an internal engine issue could cause this.
  3. Evaporative System codes (P0411 P0411, P0440 and the P0442, P0446, and P0455 codes):This failure code is activated when the EVAP system is unable to contain the vapors of the combustion of fuel or as a result of an air leak in your tank caused by an unfit gas cap that permits fuel vapors to escape into the air.
  4. Exhaust gas recirculation codes (P0401):The P0401 code indicates that there is an issue that is caused by the EGR (EGR) valve that is not making enough gas recirculation into the intake manifold.
  5. Catalytic Converter code (P0420 and P0430):The catalytic converters convert harmful pollution and gases into non-harmful ones. The P0420 or P0430 codes indicate an ECU detects a performance that is below the threshold of the catalytic converter.


The check engine light is an a crucial feature of every vehicle. It is a regular test to ensure that all functions are working properly. If the lights come on this means that your vehicle was unable to pass the test twice in a row and there’s a problem that has to be resolved.

How can the Check Engine Light turn off on its own? Yes, it’s possible. If the diagnostic system of your car is able to pass three times in similar tests, but it was unsuccessful earlier and the light will then go out. However, identifying your car by using an OBD scanner to identify trouble codes is an excellent idea.

I hope you find this article useful. Have fun driving!


How long does it take to get the check engine light to turn off?

It could take from a few days up to two weeks to wait for the check engine light to shut off automatically. If the issue persists, it is recommended to bring your vehicle into the service center to figure the issue.

What is the significance if The Check Engine Light turns up and down?

It is usually a sign that you’re experiencing a minor problem however it should not be ignored. The most common issues that can cause the Check Engine Light to turn up and down are an unfit gas cap and a failed oxygen sensor, defective spark plugs, and a defective Mass Airflow Sensor.



What Does Your Check Engine Light Mean?


CD Player in New Cars: Is it Still a Thing?


Troubleshooting and Repairing Exhaust Leaks: Everything You Need to Know

Leave a Comment