How Do You Reset The Check Engine Light In A Toyota Camry? Includes Three Methods

Last Updated on February 12, 2023 by Leepu Da Maxim

Usually, the check engine light goes off automatically once the problem is fixed. But there are a few ways you can manually turn off the check engine light. You can disconnect the battery and turn off the check engine light easily. On the other hand, you can also use an OBD-II scanner to turn off the check engine light.

Key Takeaways

• When you discontinue the battery, it will erase all stored error codes in the car’s computer and turn off the light
• In order to discontinue the battery, you have to locate the negative cable on the battery and disconnect it
• OBD-II scanner is a diagnostic tool that you can connect to the car’s onboard diagnostic port to reset the check engine light

How To Reset Check Engine Light

The check engine light on your Toyota Camry shows an icon of an engine that has the word CHECK under it. This light is amber in color and alerts you when there’s an issue with your engine. Before turning off this light, always ensure the underlying problem has been resolved to avoid other issues in the future. Contact your mechanic or Toyota dealer to have the engine checked. If your engine has been checked and the issue is resolved, but the light is still on, take the following steps to reset it. Please note that resetting without addressing the issue will have the light come back on in no time.

Method 1: Disconnecting The Battery

To reset the check engine light using this method, follow these steps:

1. Use a wrench to disconnect the battery’s negative and positive car cables.

2. Press the car horn for about 30 seconds to drain any remaining electricity from the capacitor.

3. Wait for about 15-20 minutes for the error codes to be deleted and for the check engine light to turn off. Once all that is done, you can re-install the vehicle’s battery cables.

Method 2: use An Automotive Scan Tool

A scan tool is similar to a car code reader. It is designed to read and clear codes and view data readouts from the vehicle’s sensors. You can connect this tool to the OBD-I or OBD-II socket to interface with, diagnose and reprogram your vehicle’s control modules. Follow these steps to reset the check engine light on your Toyota Camry using this tool

1. Park your car and set the emergency brakes

2. Locate the OBD-II port that is found under the dashboard and plug in your scanner

3. Turn on the ignition without starting the engine. If your car has a start and stops button, press it twice but not touch the brake pedal.

4. Allow the scanner to turn on and connect to the car

5. Select OBD-II, then READ CODES. If any fault codes show on the scanner, ensure they are only STORED or PAST but not CURRENT.

6. Once you confirm that there aren’t any current error codes, go back and select CLEAR FAULT CODES, then press ENTER.

7. Turn off the ignition, wait for ten seconds, then restart the engine. The check engine light will be off.

Method 3: Fix The Underlying Issue

The check engine light on your Toyota only comes on when there’s a problem. If the problem isn’t fixed, the check engine light will come on again after using the above methods. The only sure way to clear the error code is to have the vehicle checked by a mechanic and the specific problem fixed. Various problems will cause the check engine light to come on; they include faulty oxygen sensors, spark plugs or plug wires that need to be replaced, or a loose gas cap. Whatever the issue is, the check engine light will go off and stay off once it is resolved. If you try these methods and the check engine doesn’t turn off, it is advisable to take your car to the Toyota service center near you. The technicians are well-equipped to check your vehicle, ensure it is in perfect working condition, and reset the light.     

What Causes The Check Engine Light To Come On In A Toyota Camry?

The check engine light can be intimidating for most drivers since you don’t know what that light represents. This light can be a sign of a severe problem or something as minor as your gas cap needs tightening. We recommend booking an appointment at a Toyota service center to have your car checked when this light comes on.

Let’s look at some common reasons why the check engine light comes on:

1. Aftermarket Parts Not Appropriately Installed: Ensure it is installed correctly if you get an aftermarket part such as an alarm or exhaust. When not installed properly, the parts can discharge the battery causing the check engine light to come on. If this is the issue, the technician at the Toyota service center will check and install the part properly; sometimes, you might find that the part is faulty and needs replacement. We advise using OEM parts since they are designed for perfect installation and will save you money In the long term.

2. The Oxygen Sensor Needs To Be Repaired Or Replaced: the oxygen sensor measures the amount of oxygen in your exhaust system. When faulty, it will either sound rough when idling or run irregularly. A faulty sensor will impact your engines combustion intervals, timing, and other vital functions

3. Damaged Catalytic Converter: the catalytic converter is a crucial part of your vehicle’s engine. It works to convert the carbon monoxide produced during combustion to carbon dioxide. When damaged, your car can have overheating problems, poor engine performance, and deteriorating fuel economy. The vehicle will not pass the emissions test if the catalytic converter is damaged.

4. Worn-Out Spark Plugs And Plug Wires: the spark plugs play a significant role in your vehicle’s ignition; they are responsible for ensuring that the pistons move and the engine runs. When worn out, they can cause damage to your engines, and that’s why they prompt the check engine light to come on.

5. Faulty Mass Airflow Sensor: the mass airflow sensor determines how much fuel is needed for the engine to run efficiently. This sensor needs to be in excellent condition to start and adjust accordingly.

6. Vacuum Leak In Your Toyota Camry- your Toyota Camry has a vacuum system that helps lower harmful emissions and performs various other functions. The hoses of the vacuum system can dry out or crack when exposed to extreme temperatures; when this happens, the check engine light will ignite.

7. Loose Or Missing Gas Cap: the gas cap on your Toyota Camry prevents gas fumes from being released when driving and seals the fuel system to help maintain pressure in the fuel tank. If the check engine light ignites immediately after refueling, check if the gas cap is loose or missing.

Frequently Asked Questions 

Q. Is It Safe To Drive Your Toyota Camry With The Check Engine Light On?

This will depend on the severity of the issue causing the check engine light to ignite. If it’s a loose gas cap, you can drive with no issues, but if it’s a problem with the plugs or sensors, you shouldn’t drive to avoid further damage to the engine. Since you don’t know what is causing the alert, it is advisable to avoid driving the vehicle. If you notice a change in performance when the light comes on, schedule your vehicle for service as soon as possible.

Q. Will The Check Engine Light Reset Itself?

Yes, the check engine light resets itself typically when the issue that caused it to come on is resolved. For example, if it came on because of a loose gas cap, it will reset when the cap is tightened. When you take your vehicle to the mechanic, they will reset it for you after the service.

Q. How Much Does It Cost To Have The Engine Light Checked?

On average, a check engine light diagnosis costs between $80-$ 100, but it will vary depending on what needs to be fixed. However, Toyota offers complimentary inspections and free diagnostics, so you will only be charged for repairs.

Final Word

If you are like me, the check engine light causes some panic since you don’t know the issue at first. It would help if you got your car checked soon so that the problem doesn’t get worse. It will often be a minor issue that can be resolved quickly. Ensure you go to a qualified mechanic to solve all the problems and reset the check engine light.