What is how to reset check engine light?

Here's information on how to reset a check engine light, in Markdown format with the requested links:

Resetting Your Check Engine Light

The dreaded check engine light (CEL) can be alarming, but sometimes it indicates a minor issue. Before resetting it, it's crucial to understand why it came on in the first place. Ideally, you should get your car scanned to diagnose the problem. However, if you're sure the issue is resolved (e.g., you tightened a loose gas cap), you can try resetting the light. Be aware that resetting the light without addressing the underlying problem will only temporarily mask it, and the light will likely return.

Here are a few ways to reset a check engine light:

• Using an OBD-II Scanner: This is the most reliable method.

  • Purchase or borrow an <a href="https://www.wikiwhat.page/kavramlar/OBD-II%20Scanner">OBD-II Scanner</a>. These scanners plug into your car's OBD-II port (usually located under the dashboard).
  • Follow the scanner's instructions to read the error codes.
  • Most scanners have a "reset" or "clear codes" function. Use this to turn off the light.

• Disconnecting the Battery: This method can work, but it's not always effective and may erase other stored data (like radio presets).

  • Make sure your car is turned off.
  • Locate the negative terminal of your car battery (usually marked with a "-" sign).
  • Using a wrench, carefully disconnect the negative cable.
  • Wait 15-30 minutes. This allows the car's computer to reset.
  • Reconnect the negative cable.
  • Start your car. The check engine light might be off.

• Driving: Some minor issues that trigger the CEL will resolve themselves. The light may turn off after several drive cycles (a drive cycle is a period of driving that includes a cold start, various speeds, and idling). This is the least reliable and predictable method.

Important Considerations:

• Get the Code Read: Before attempting to reset the light, get the <a href="https://www.wikiwhat.page/kavramlar/Error%20Codes">Error Codes</a> read. This will help you understand the problem and determine if a reset is appropriate.
• Underlying Problems: Resetting the light doesn't fix the underlying problem. If the issue persists, the light will come back on.
• Emissions Testing: Resetting the light before an emissions test can cause your car to fail. The car's computer needs time to complete its readiness monitors after a reset.
• Professional Help: If you're unsure about any of these steps, consult a qualified <a href="https://www.wikiwhat.page/kavramlar/Mechanic">Mechanic</a>.