60 Sec Guide How to Clear Obd2 Codes Without a Scanner

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Engine light is a great technology that predicts most of your car’s problems in advance. Some people find it annoying. Maybe you are one of them.

The only way to clear the engine light is to remove the OBDII code. We will know how to clear OBD2 codes without using a scanner.

Code clearance is possible without the use of a scanner. But they are solving minor problems on your own without hiring a mechanic like me. All software-related issues can be solved using a professional OBDII scanners.

Early preparation for code reset

What is an engine light, and why is it more meaningful? All the problems of your car are displayed through the engine lights. It is more important because it predicts faults.

Why does everyone say “check the engine light“? The automatic transmission issues, anti-lock brakes (ABS), airbags (SRS), etc., are known through the engine light.

An important point, cleaning OBD2 codes without using a scanner is not always the right solution. Many times even after cleaning the code, the engine light comes on again. But why is that?

This problem occurs when your car’s engine suffers from a complex issue. The only solution, in this case, is to go to expert mechanics without reading the blog and watching the video.

How do you erase OBD2 codes without using a scanner [60 Sec]

If you do not have an OBD2 scanner, you can reset the codes free of charge. No rocket science is required for this. You can clear OBD2 codes without a scanner just by following the simple steps.

  1. For safe convenience, park your car in a safe place and press the parking brake.
  2. Then carefully open the hood of the car.
  3. Disconnecting the battery– Detach the negative (-) cable from the battery. Usually (-) lines are black. Also, remove the cable that is positive (+) and red.
  4. The battery terminal has a cap that is used for protection. Use a simple wrench to loosen it. It is better not to use a cutting wrench.
  5. Be careful that the two ends never come together.
  6. When the battery removal is complete, turn the ignition switch on and off 4 to 5 times.
  7. Then hold the horn button (steering wheel) for 60 seconds to remove some of the electricity that will remain in your ECU capacitor completely. The horn is connected to a hot circuit, so you need to complete this step.
  8. Wait 5 minutes and reconnect the two batteries just like before.
  9. Finally, please turn on the ignition key and start the engine and wait until it warms up. Then check the warning light.

If this process didn’t fix the problem, you can try using an cheap OBD II scanner. It will solve the problem.

How do you clear OBD2 codes with a scanner

clear OBD2 codes with a scanner

It is much easier to clear error codes with an OBD2 scanner. First read repair manual. If you do not have an OBD2 scanner, Please see review about OBD2 scanner.

  • Close the steering wheel.
  • There is an OBD II diagnostic port on the driver side and below the dashboard. Connect your code reader to the vehicle via cable. If you have a Bluetooth OBD2 scanner, take the help of this app.
  • Turn on the OBD2 scan tool and also your car.
  • If you wait for a while, you will see that the scanner has displayed trouble codes.
  • Then erase the code by pressing the clear button.

An OBD2 scanner has several uses. If you are not aware of OBD2 scanner usage, you can discover how to use obd2 scanner and become a pro.

What problems do after resetting the OBD2 codes?

When you reset your smartphone, you have to give a new setup like time, theme, font, etc. 

Similarly, after clearing the OBD2 code, you need to reset your car. It’s not a big deal. You can do it in a short time. Let’s try to find out.

  • Radio, watch need to be rebooted.
  • Drive settings need to be fixed.
  • Car’s transmission – automatic transmission won’t work, so there’s nothing to fear. If you drive manually for a while, everything will be fine.

The backup system works in some cars. In that case, you don’t need to do anything. A good aspect is that it saves your settings even after all the power ECU is eliminated. 

You can call it a kind of temporary memory which is an important feature.

What should you do if the OBD2 codes turn back on?

What to do if the engine light returns immediately after following the procedure both with and without the scanner?

The car can have a severe problem that you can see with experienced mechanics. It is better to have a scanner. It allows you to solve minor issues on your own without going to mechanics.


Will the OBDII codes clear faster? If I manually clear the check engine light after a repair or just wait until it clears itself?

OBDII codes erase very quickly in a short time. If you repair the code manually, the code will clear automatically. You don’t have to wait.

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