What would cause the check engine light to flash?
A flashing check engine light indicates a much more serious issue. Most often it means that the engine is misfiring and unburned fuel is getting into the exhaust system. This raises the temperature of the catalytic converter and can cause critical damage.
What does it mean when your check engine light flashes then stops?
What does it mean when your check engine light flashes then stop? This is usually a sign that your Check Engine light was on and the light turned off. The most common reason the check engine light turns off is because you turned it off with the key and pressed reset.
It means that one or more of the emissions systems is not ready, also known as the I/M readiness test. All the systems will be tested as you drive the vehicle, and the light usually stops blinking after a few driving cycles.
An air filter or Mass Air Flow sensor may be dirty, or a vacuum or exhaust leak may be present in the system. A Check Engine light can also be triggered when too much fuel is consumed relative to oxygen (high condition).
Why is my car shaking and the check engine light flashing?
Usually, when the check engine light is on and the car is shaking, that means you’re dealing with an engine misfire. Basically, the check engine light comes on whenever there’s an issue that could increase vehicle tailpipe emissions.
Is it OK to drive with flashing check engine light?
The rule of thumb is that if the check engine light is flashing, you can’t keep driving the car. It’s an emergency. Often it indicates an engine misfire. If you keep driving, you will likely cause irreversible damage, mostly to the (expensive) catalytic converter.