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What causes the check engine light to blink on and off then stop turn off?

The check engine light is designed to alert you to a problem with your vehicle’s engine or emission control system. When the light blinks on and off, it usually means that there is a serious problem that needs to be addressed immediately. Here are some possible causes:

1. Misfire

* One or more of your engine's cylinders is not firing properly. This can be caused by a number of things, such as spark plug problems, fuel injector problems, or problems with the ignition system.

2. Catalytic Converter Failure

* The catalytic converter is a device that helps to reduce emissions from your vehicle's engine. If the catalytic converter fails, it can cause the check engine light to blink on and off.

3. Oxygen Sensor Failure

* The oxygen sensors in your vehicle monitor the amount of oxygen in the exhaust gases and help to control the air-fuel mixture. If an oxygen sensor fails, it can cause the check engine light to blink on and off.

4. Vacuum Leak

* A vacuum leak can cause the engine to run lean, which can also cause the check engine light to blink on and off.

5. Electrical Problems

* Electrical problems such as a faulty ignition coil or a bad spark plug wire can also cause the check engine light to flash.

It is important to note that a blinking check engine light is a potentially serious problem and you should take your vehicle to auto repair garage have its diagnosed and checked immediately to avoid further damage to your vehicle. The mechanic will be able to diagnose the problem and make the necessary repairs.