Often asked: How To Clear A Check Engine Light?

Can you reset a check engine light yourself?

The simplest most straightforward way to get rid of the check engine light is to drive it for a little bit, and the light will turn off by itself. Once you drove your car for a couple of days (e.g., usually three days), the check engine light should be gone.

Can Autozone clear a check engine light?

Yes, we can help you clear your code; it’s called telling you how to fix your damn car. Like others have said, even after clearing it, the light will come back on within 30-50 miles of driving.

How do I clear my service engine soon light?

Cycle ignition switch to ON position and wait 1 minute, then start your vehicle. Check Engine Light or Service Engine Soon Light should be reset and turned OFF.

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Can I disconnect my check engine light?

As others have already pointed out, you can simply remove the lamp or disconnect it and it won’t light up. You could use the power line for another lamp that goes on during the startup check but doesn’t normally come on if you want to make sure it does come on during the startup check.

Can low oil cause the check engine light to come on?

Low oil pressure is a common cause of a check engine light turning on, and it can seriously interfere with your car’s performance. Usually, if this is the case, your oil light will also appear. In any case, low enough oil pressure will disable your vehicle, so get this repaired immediately.

What is the most common reason for check engine light?

Replacing a faulty oxygen sensor — a sensor used to optimize a vehicle’s fuel-to-air mixture to increase gas mileage and reduce emissions — is the most common cause for a check engine light.

Where can I get my check engine light read for free?

At a local auto parts store

  1. Advance Auto Parts.
  2. AutoZone.
  3. Napa Auto Parts.
  4. O’Reilly Auto Parts.
  5. Pep Boys Auto Parts.

What does AutoZone check for free?

Many drivers don’t realize that AutoZone, the nation’s largest auto parts chain, will do the following services free of charge: Read the codes on your check engine light. Test your battery’s voltage. Check your alternator and starter.

Can service engine soon mean oil change?

A Service Engine Soon light will appear when your cars onboard diagnostic system (the ECM) detects a potential problem. Its purpose is to alert you of any minor issues before they become major concerns. Common causes include needing an oil change, or a new cabin filter or air filter.

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How do I fix my service engine soon?

To start the process, you will have to disable the service engine light of your vehicle. You can use the scan tool or you can disconnect the battery of your car as well. But the easy and effective way is to use a scan tool. You will need a pen, paper, and a scanning tool to reset your engine soon light.

Can I drive with the service engine soon light on?

That having been said, you can probably drive safely with the service engine soon light on, as long as it is on solid and not flashing. If the service engine light is flashing, you should pull over immediately and call for roadside service and have the vehicle towed to the mechanic.

How do you pass an emissions test trick?

Tips & Tricks for Passing an Emissions Test

  1. Warm up your engine.
  2. Make sure your car is up-to-date on routine service.
  3. Fix any known engine-related problems.
  4. Make sure the “Check Engine” light is off.
  5. Bring your vehicle to a smog test location that retests for free.
  6. Make sure the “Check Engine” light is off.

Why is my check engine light off but code still there?

If you’ve fixed the problem but haven’t cleared the codes with a scan tool, your check engine light will be off but the code will remain stored for a predetermined period of time until (in most cases) it will clear itself.

Can you clear codes to pass emissions?

To pass an OBD-II emissions test, a vehicle must:



If you clear the ‘Check Engine’ light, or reset the OBD-II monitors right before your emissions test, your vehicle typically will not pass because the catalyst and EVAP monitors need time to run. If it’s not in a “ready” state, your vehicle will automatically fail.

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