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Could be one or several reasons out of many that caused the check engine light to illuminate. Ask your local auto parts store to plug in a code reader and give you the code(s) then post your findings. Most auto parts store will provide this service at no cost.By the way, the year, make, model and engine info would help.

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5y ago
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5y ago

At least one of possibly a hundred + things. You need to get codes pulled to narrow it down.

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Q: What is wrong when the malfunction indicator comes on and stays on?
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What is usually wrong when your malfunction indicator light stays on?

You may need to change the indicator bulb, that's what was wrong with mine.

What causes malfunction indicator light to come on?

A malfunction indicator light comes on because a detector elsewhere in the item has noticed a malfunction in whatever it is monitoring.

I have a Ford ranger 1990 4.0 4x4 and the check engine light comes on and off some times What is wrong?

If your check engine light comes on and STAYS ON, a malfunction has occurred that is effecting the emission control system If the light comes on and then goes off , occasionally , the malfunction has corrected itself If the light flashes on and off at 1 second intervals , a spark plug misfire has been detected

What does the malfunction indicator light mean on 2001 Toyota Camry?

The Computer has detected a malfunction - The cheapest way to diagnose what is wrong take it to your nearest Auto zone and have them check the code for you. Most do it for free

What could be wrong if the dash indicator incorrectly shows a rear taillight malfunction on a 1996 Jeep Cherokee?

I thought the same thing on the wifes car. I forgot about the third brake light, and was looking only at the tail lights.

How do you reset the service engine soon light on a 2001 Saturn lw200?

Run a diagnostic test to find out why the computer turned on the MIL (malfunction indicator light), repair whatever is wrong and the light should go off.

In technological terms is a malfunction a good thing?

No. A malfunction generally means when something goes wrong

What is wrong with a 2001 Chrysler Town and Country where ABS light goes on sometimes without any apparent reason going off after time?

The abs light stays on when the computer has detected a malfunction and set a trouble code.

Definition of a hazardous malfunction?

something that was gone worng then did gone wrong

F-250 check engine light stays on after changing battery?

The check engine light is an indicator that the computer has detected a fault in one or more of the electronic components. Use a code scanner to figure out what is wrong.

What is wrong with the car if the malfunction indicator lamp comes on and the car starts shaking?

There could be many problems with your car depending on the code. For instance, you have to go to a mechanic or car shop for them to hook this plug up to your car. It will give you a code and that code will tell you exactly what is wrong with your car. The MIL came up on my car before and I had to change the thermostat of my car. Once you have the code, you can just google it and it should tell you the problem as all the codes are generic. Hope this helps.

But your security light in not blinking it only shows for a few seconds when turning the ignition on?

When you first turn on the ignition the indicator lights should briefly illuminate to demonstrate that they are working. If the light stays on after the test cycle, it is an indication that something is wrong.