Question: What Is The Most Common Reason For A Check Engine Light?

What causes engine warning light to come on?

Your spark plugs ignite the fuel in your engine’s combustion chamber.

If a spark plug or its wiring fails, you will notice a decrease in your engine’s power, as well as it stalling from time to time.

It will also cause your engine management light to become illuminated on the dashboard..

How far can I drive with a check engine light on?

When the check engine light is solid, you can typically drive the car for hundreds of miles without an issue. Of course, that depends on which code is stored in the vehicle’s computer. If an engine sensor is faulty, the car will usually use made up sensor values to keep running.

Can check engine light turn itself off?

A check engine light will shut itself off if the condition that caused it is remedied. So, if your converter is marginal, and you did a lot of stop-and-go driving, which creates high demand for the converter, that may have turned on the check engine light.

Is it safe to drive with check engine light on?

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.

How do you fix a check engine light?

If the check engine light comes on, here are some tips on what you should do:Look for a serious problem that requires immediate attention. … Try tightening your gas cap. … Reduce speed and load. … Use built-in diagnostic services, if available.