Clear Engine Fault Codes: What It Means and How It Helps
Clear Engine Fault Codes: What It Means and How It Helps
If your Check Engine Light (CEL) came on because of something simple — like a loose connector or temporary sensor glitch — there's a built-in solution most diagnostic tools offer: the “Clear Fault Codes” or “Erase DTCs” function.
What does it do?
This feature lets you turn off the Check Engine Light after the issue has been fixed, by erasing the Diagnostic Trouble Codes (DTCs) stored in your vehicle's computer.
When should you use it?
You can safely use this function after the root cause of the issue has been resolved, such as:
- Reconnecting a loose plug
- Replacing a faulty sensor
- Charging or replacing a dead battery
- Addressing a misfire or emissions code that no longer applies
Things to keep in mind:
- Always fix the actual problem first — don't just erase the code to hide the warning.
- After clearing codes, your vehicle may reset some onboard monitors (used for emissions testing).
- If the problem hasn't truly been fixed, the light will likely return.
Tools that support this function:
Devices like the Autel MK808BT Pro, Autel MK900-BT, or Autel MP808BT PRO offer one-touch access to clear codes and turn off warning lights. This helps you verify repairs and restore your dashboard to normal.
Need Help?
If you're not sure whether it's safe to clear a code, feel free to reach out to our support team — we're happy to help you understand what's going on under the hood.
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