FAQ: What Does It Mean When The Check Engine Light Is On?

What could cause the check engine light to come on?

Spark Plugs

Finally, worn spark plugs or plug wires will result in a check engine warning. Just about anything wrong with your vehicle’s ignition system will likely cause your check engine light to come on. Stalls are another indicator of spark plug trouble.

Is it safe to drive your car with the check engine light on?

If the check engine light comes on while you’re driving, it can be unnerving. The check engine light means there’s a problem somewhere in your emissions system. Regardless, you’re safe to drive for now as long as the car isn’t performing strangely. Just have the check engine light checked and the problem repaired.

Should I be worried if my check engine light is on?

If the check engine light illuminates, it will either blink or remain constantly illuminated, depending on the problem. A blinking light, or in some cars a red light instead of a yellow or orange light, indicates a problem that needs immediate attention. Either way, you should have the vehicle checked by a mechanic.

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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.

Will check engine light reset itself?

Your vehicle’s check engine light will will reset by itself once the issue or problem has been repaired; this is true for most models. If you are certain that you have resolved the issue that caused your check engine light to come on in the first place, then the light should reset itself after at least 20 cycles.

Who does free check engine light diagnosis?

At a local auto parts store

  • Advance Auto Parts.
  • AutoZone.
  • Napa Auto Parts.
  • O’Reilly Auto Parts.
  • Pep Boys Auto Parts.

How serious is check engine light?

The check engine light — more formally known as the malfunction indicator lamp — is a signal from the car’s engine computer that something is wrong. If the light begins flashing, however, it indicates a more serious problem, such as a misfire that can quickly overheat the catalytic converter.

How many miles do you have to drive to clear a check engine light?

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.

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How urgent is a check engine light?

Unlike a Temperature or Oil Pressure light, a Check Engine light is usually not an urgent, “Stop right now or you may cause permanent damage!” type of situation, unless it is flashing. If your gas cap is loose or the seal is not tight, the vapor leakage can cause your fuel system to trigger the check engine light.

How do I turn my check engine light off?

How to Get Rid of the “Check EngineLight

  1. 4 Ways to Turn off the “Check EngineLight. Method.
  2. Drive Your Car and Let the Light Go off by Itself. The first and easiest method for clearing the check engine light is driving and time.
  3. Turn the Car on and off Three Times.
  4. Disconnect and Reconnect the Battery.
  5. Use an OBD Code Reader.

Can AutoZone check engine light?

Does AutoZone Scan Check Engine Lights? AutoZone does. If your light is on, and you are wondering why, head down to your local AutoZone where one of our store associates can help diagnose the issue through our free Fix Finder service.

Can low oil cause misfire?

You can‘t drive a misfiring engine very long without causing additional damage. If the low oil pressure warning light came on, too, there could be a connection simply because running the engine too low on oil will cause mechanical damage and thence malfunctions of all kinds.

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