4 Step guide on How to Disable Check Engine Light Permanently (Remove Check Engine Light Fuse)

Last updated on July 31st, 2023 at 09:07 pm

Are you looking for how to turn off the check engine light or maybe it is how to disable check engine light permanently? Well, this article on how to turn off the check engine lights permanently shows you exactly what to do in a situation like this to help permanently delete engine codes.

Your check engine light (CEL) naturally triggers on once it spots a hitch with your emission control system. The check engine light produces a cipher that can help you detect the error in your automobile for easy rectification. It may require you to manually reorganize the light after maintenance if the code refuses to automatically resolve. Check engine lights could be fixed by utilizing a code scanner. This may not be applicable for cars manufactured before 1996. For these automobiles, all they have to do is just to sever connections from the battery to reset the light.

If your check engine light refuses to go off after you’ve turned it on, the fault may be from your car’s computer. In some cases, the computer needs to be well-informed that the problem has been rectified. Now, you might want to know how to disable the check engine light permanently so that it can take care of the issue once and for all.

If there’s a fault in your car displayed on the onboard computer system, the check engine light trips on. When the trouble is remedied, the engine light doesn’t mechanically trip off. This can be quite infuriating and may deter you from rectifying potential faults that the mainframe in the car possibly will be trying to caution you about. It is possible for the check engine light to still be on due to an error in your engine. So, before trying to disable check engine light permanently, it is imperative to be certain that there is no slipup in your engine.

In our last related article All About Flashing check engine light & Blinking cruise control light, we discussed all that in detail. You can read more there, but for this, we proffer solutions to different issues bothering check engine lights which we hope would be helpful to you.

They include:

How to turn off check engine light permanently, how to turn off the check engine light, Which fuse controls check engine light?, How to remove check engine light fuse, How to permanently delete engine codes

Other Related Articles you might want to read too:

3 Ways on how to turn off the check engine light

1. Turn the car ignition on & off

The first way on how to turn off the check engine light is by turning on and off the vehicle’s ignition control button. and you can turn the ignition on or off to reset the light without having to disconnect batteries. After a second, insert the keys into your ignition. Then turn your ignition on and then off in succession.

After it’s done, check if the engine light is still on. If the check light is on, you’re ready to go. However, if the check engine light is still on, use a scanner to read the codes. will later talk about using a scanner to get rid of the light in section 2 ways on how to remove check engine light.

2. Let the Light turn off on its own

Driving Your Car is another step on how to turn off the check engine light which can make the light go away on it own.

This is an easy method but will be achievable if you have already fixed the problem that triggered the check engine light in the first place. In this situation, all you need is just to wait and drive your car for two to three days and it will turn off. The car’s computers are constantly refreshed and updated by the computer.

Before you use this technique, make sure the problem is solved.

If the ECU detects an oxygen sensor problem that could be caused by a minor glitch, it may fix the issue automatically. The ECU will then update the sensor’s status after the glitch has been removed. This will set off the check engine lamp. If your check engine light remains on after three days, you can either use the above-mentioned techniques or call a mechanic. You can read more about this here: Does the check engine light turn off by itself?

3. Pulling off the Fuse and putting back

Pull Fuse

You can get your check engine light off by removing the fuse from the engine control unit and putting it back. This won’t fix the problem on newer cars but it might help older cars. To locate the fuse for the engine control unit, consult your repair manual.

2 Ways on How to remove the check engine light

There are two ways to get rid of the check engine light.

1. Reconnect the battery and disconnect it

A wrench is required. To disconnect the vehicle’s positive power cable, lift the hood. The battery should be left disconnected for no less than 15 minutes. Next, turn your key three times to the ON position. This will remove the vehicle’s emissions data as well as readiness flag data.

Connect the positive battery cable to the car’s ignition and then turn it on. Give it a minute, and the check engine lights should go out.

2. Use an OBD Code Reader

A wrench and an OBD reader (onboard diagnostics) are required. These readers are inexpensive and can clear out engine codes. This task was accomplished many times using the Kobra OBD scanner.

Here is to execute this method:

Connect the reader to the OBD port on your vehicle. The OBD port is located in the area under the dash, just above the footwell. To access the port, you will need to take off the fuse box door.

After connecting the reader, click the “enter” button to turn it off.

The reader will scan your engine to find any errors codes. After analyzing your engine, the reader will display any errors it finds. If you want to cross-check the codes in the code reader’s manual, or online, make sure to take note of them.

You can now press the “scroll” button to locate the option to delete the code. To erase the fault code or reset the check engine lamp, press enter.

An OBD reader can be used to reset the check engine light.

FAQ on how to turn off the check engine light Permanently

These are some of the most frequently asked questions about this topic.

Is the check engine light able to turn itself off?

Sometimes the light will go out by itself after you have addressed the problem.

Why does my check engine lamp turn on and off intermittently when I try to start the engine?

This could be due to a number of reasons. There could be several reasons why intermittent misfiring is occurring, including a loose gas cap, failing engine sensors or spark plugs, defective valves in the EGR system (exhaust gases recirculation), and failing engine sensors. It is best to have your car checked by a professional mechanic.

Is the check engine light on after repairs?

Sometimes, yes. Other times, no. The light will turn on relatively quickly if the problem has been resolved and the computer has been cleared using a scanner or code reader.

That’s not always the case though, and the light may still stay on (or turn on and off intermittently)–especially if you have a larger electrical or wiring problem.

If your car is still on its own after it has been repaired by a mechanic, but the problem seems to have been resolved, you can take it back to the shop to ask the mechanic to reset the light.

A. How to Disable the “Check Engine” Light Permanently

1. Drive car and allow the Check engine light go off

On how to disable the check engine light permanently, the first technique is driving and time. The majority of mainframes will retune all issues that triggered the check engine light to activate numerous times. Just keep driving your car to wherever you wish to go, if the check engine light is still on after 3 days, then it means the matter wasn’t rectified and you could undertake the alternatives mentioned below.

2. Turn the automobile on and off thrice

To disable the check engine light permanently in some automobiles, they will robotically reset the problem codes that triggered the earliest fault after the car is put on and off thrice in progression. You have to turn on your ignition. Then go over this procedure again twice consecutively before proceeding to drive your car. This should disable the check engine light permanently.

3. Separate and reconnect battery

To achieve this:

Open hood of the vehicle using a wrench.
Separate the (+) power cable connected to the battery by means of the wrench.
Disengage the battery and leave like that for about 20 minutes.
Turn on the ignition thrice to the “ON” point.
This should wipe out the records from memory.
Then proceed to join the (+) battery cable and on the automobile ignition. Wait for a minute and observe check engine light error.

4. Use an OBD Code Reader

You can also disable the check engine light permanently using a wrench and an OBD reader. These economical readers examine and clear engine codes.

To achieve this:

Attach the reader to the OBD port of car which is situated underneath the dash area. It may require you to take out the fuse box door.
Immediately you connect the reader, press the “enter” button.
This ought to inspect your engine for error codes.
All error codes detected will be displayed by the reader.
Then scroll to find the alternative to wipe out the code. Press enter to remove the fault code and reorganize the check engine light.

B. Which Fuse Controls Check Engine Light

You can try detaching the (-) battery terminal for about 20 seconds and observe if it helps in eliminating the check engine light. The ECM has been about six codes linked to the fitness of the ECM. Scrutinize it to be certain if any subsist. It is suitable to change the bulb for your check engine light as this is the most palpable signal. Manage the principal part of the palpable cause before investigating more inaccessible areas.

The fuse that reins the check engine light is akin to the small yellow box-like item situated on the lower-left corner, with two 10mm fuses. It’s a double fuse on the fuse box beneath the dash and reads ROOM/PLAFON.

The light should automatically come on when you turn the ignition key to “ON” position and should go out when the engine comes on.

If it refuses to come on, then the issue may be from the bulb. In most cases check engine lights ground via the ECM. So, if the bulb is okay, then it could point to an ECM defect.

Lets next look at how to remove check engine light fuse

C. How to Remove Check Engine Light Fuse

To remove check engine light fuse, you can use a code spanner or you can simply unplug the battery.

On-Board Diagnostics (OBD) scanners are most appropriate for automobiles manufactured after 1996. For automobiles produced after the 1990s, they may not have an OBD port beneath the control panel. If they do, it may require you to use a different scanner.
Check beneath the navigation column to trace the port, then bond the cord attached to the scanner to the port.
Put the ignition key and turn and switch to “on” without turning on the car. Immediately the lights on the dash come on turn off all the frills of the automobile and then press the “read” knob on the scanner to inspect the check engine light code.
The symbols will be a series of letters and numbers. Make certain all the codes are taken down to easily figure out what they symbolize and make the needed rectification.
Push the “erase/clear” knob on your scanner, then turn off the key and detach it. Get rid of the (-) cable from the battery.
Deplete residual electrical energy from capacitor.
Wait for approximately 15 minutes and connect back your battery.
Leaving the battery detached for about 20 minutes will ensure the automobile systems will totally reorganize when you connect the battery again.

D. How to Permanently Delete Engine Codes

It is wrong for you to permanently delete engine codes without first resolving the basis of the drawback. It might be that the light is on due to the gas lid being unfastened. It might even be that there’s a high temperature in your transmission which is on the brink of going out.

You can permanently delete the engine codes by making use of an OBD2 Scanner. They can easily tell you if there’s any fault.

So, on how to permanently delete engine codes:

Park your car in level ground and engage the parking brake
Open the hood and separate the (-) black cable from the battery whilst using a simple wrench to slacken the clamps.
Remove the (+) red cable from the battery. These cables must never come in contact.
Switch the ignition to the ON and OFF point for approximately 5 times.
Push on the horn knob in the steering wheel and hold for 30 seconds.
Connect back the wire to the car battery and continue with the + terminal followed by the – terminal. Tighten the clamps.
Start your automobile and let the engine to heat up a little, the check engine light should automatically go OFF.

Conclusion on How to Permanently Delete Engine Codes and How To Remove Check Engine Light Fuse

You don’t need to get worked up when your check engine light trips on indicating a setback. Your vehicle is still very much drivable. If you aren’t with a tool, then it is best to consult a proficient mechanic to rectify the issue. You must never clear engine codes without determining the foundation of the trouble code and rectifying it.

You can get your OBD2 scan tool for around $20. Wireless OBD2 scanners are ultimate and can connect effortlessly with your Smartphone or tablet.

The methods we’ve thrashed out above will assist you to eliminate any bothersome check engine light and make room for new faults to be shown appropriately. If you find this post to be helpful please share it. you do that by pinning the image below on Pinterest