Can I clear the check engine light myself?
The check engine light is one of the most common and frustrating warnings that drivers encounter. It can indicate anything from a loose gas cap to a more serious engine issue. If you’ve ever wondered whether you can clear the check engine light yourself, this article will guide you through the process, while also explaining when it’s best to leave it to the professionals.
Understanding the Check Engine Light
The check engine light is part of your car’s onboard diagnostics system (OBD). When it illuminates, it means your car’s computer has detected an issue. This could range from minor problems, like a faulty sensor, to major issues, such as engine misfires. While clearing the light is possible, it’s crucial to address the underlying cause to avoid further damage to your vehicle.
Steps to Clear the Check Engine Light
If you’re confident the issue is minor or has already been resolved, you can try clearing the check engine light yourself. Here’s how:
- Use an OBD-II Scanner: Purchase or borrow an OBD-II scanner, which connects to your car’s diagnostic port (usually located under the dashboard). Follow these steps:
- Turn off your car and plug in the scanner.
- Turn the ignition to the "on" position without starting the engine.
- Follow the scanner’s instructions to read and clear the error codes.
- Disconnect the Battery: If you don’t have a scanner, you can disconnect the negative terminal of your car battery for about 15 minutes. This will reset the car’s computer and clear the light. However, this method may also reset other settings, such as your radio presets.
- Drive the Car: In some cases, the light may turn off on its own after a few driving cycles if the issue has been resolved.
When to Seek Professional Help
While clearing the check engine light is straightforward, it’s important to remember that the light is a warning sign. If the light comes back on after you’ve cleared it, or if you’re unsure about the cause, it’s time to consult a professional mechanic. At Kevin’s Autos, we specialize in diagnosing and repairing all types of vehicle issues, ensuring your car is safe and reliable.
Why Addressing the Root Cause Matters
Ignoring the check engine light or repeatedly clearing it without addressing the underlying problem can lead to more significant and costly repairs down the line. For example, a minor issue like a faulty oxygen sensor can eventually damage your catalytic converter if left unchecked. Always prioritize your vehicle’s health and safety.
Conclusion
Yes, you can clear the check engine light yourself using an OBD-II scanner or by disconnecting the battery. However, it’s essential to diagnose and fix the root cause of the issue to prevent further damage. If you’re in doubt or need assistance, don’t hesitate to reach out to Kevin’s Autos. With years of experience in car maintenance and repair, we’re here to help keep your vehicle running smoothly.
Frequently Asked Questions
Will I pass emissions if I clear my check engine light?
You will definitely fail the test. After a reset the car must go through drive cycles to prove the operation of the emissions systems.
How many miles do you have to drive to clear a check engine light?
30 to 100 miles
To make sure the check engine light does not reappear, it's recommended that you drive your car 30 to 100 miles. This enables the vehicle's “Drive Cycle” to reset, as the various sensors need time to recalibrate.
Can you clear an engine code without a scanner?
Can I reset my car's check engine light without a scanner? Yes, you can reset it by disconnecting the car battery for a few minutes.
Is it illegal to clear check engine codes?
Tampering with a check engine light—or any other vehicle diagnostic or warning system—and then selling the car can indeed be illegal, especially when it comes from a dealership.
Will AutoZone clear the check engine light?
Bring your car to your local AutoZone and our friendly staff can perform the scan for you. And for any parts you need to correct the codes and clear your Check Engine light, we're here for you.
How to permanently turn off the check engine light?
You plug an OBD-II scanner tool into it and, in most cases, out pops a code that tells you what the problem is. The scanner also allows you to clear the vehicle's internal code, which is what triggered the check-engine light. Do that, and the warning light will turn off.
How to clear a check engine light for emissions?
Plug an OBD-II scanner into your vehicle's OBD port and reset it to clear the check engine light. Disconnecting and reconnecting your battery will restart your vehicle's computer and clear the light. Drive an older vehicle around for a few days after repairs. The light will go off on its own once the computer resets.
Can a check engine light go away by itself?
Will your check engine light turn off by itself? In most cases, successfully repairing the issue that caused your light to come on will cause the check engine light to turn off automatically—but only after 10 to 20 “cycles”.
How much does it cost to clear a check engine light?
Diagnostic fees alone can range from $50 to $200, while repairs can cost anywhere from a few dollars for a loose gas cap to several thousand dollars for more complex problems. If you find yourself facing a check engine light, it's important not to ignore it.
Can AutoZone clear codes on car?
Bring your car to your local AutoZone and our friendly staff can perform the scan for you. And for any parts you need to correct the codes and clear your Check Engine light, we're here for you.
