Why does my engine light come on when I accelerate?

Why does my engine light come on when I accelerate?

A vehicle’s check engine light illuminates whenever there is a malfunction. If the check engine light happened to be flashing during these episodes of acceleration, that means there is a serious fault, such as cylinder misfiring, that requires immediate repair.

What does it mean when check engine light comes on while driving?

The check engine light illuminates when your vehicle’s computer believes there is a problem that could affect — or is affecting — your car’s emissions control system. When the light comes on, one or more diagnostic trouble codes are stored in the car’s computer. These lights illuminate when a routine service is due.

Can bad gas cause a check engine light?

Sometimes a tank of bad gas can cause a “check engine” light to come on. If your indicator light is caused by bad gas, it will shut itself back off after you run a tank or two of good gas through the car. Bring the car in to have the code read.

Why does my Toyota Corolla have a check engine light?

Anytime the check engine light of your Toyota car comes up, it simply means your Toyota probably needs to be diagnosed immediately. Normally, what your service technicians who service your vehicle will do is to diagnose the car or turn off the check engine Toyota corolla light.

Why does my Toyota Corolla not pass the emissions test?

If you have an issue with your catalytic converter and don’t get it serviced, your Toyota Corolla will not pass an emissions test, show a lack of engine performance and will negatively affect your fuel economy. Your vehicle may run at a higher temperature, too, which can cause divergent problems from overheating.

When to reset check engine light on Toyota?

Once you are sure that you have diagnosed and fixed the issue of Check Engine light showing on your Toyota car, then it will reset itself after about 10 to 20 successful cycles. Note that a cycle is when the car is cold and starts again until it’s at its operating temperature.

What does mass airflow sensor on Toyota Corolla mean?

As a part of the engine management system, the mass airflow sensor helps adjust to critical changes, like altitude. If your Toyota Corolla is having trouble starting, idling rough or has a hasty change in the position of the throttle pedal, this could be a sign of a bad mass airflow sensor. Your Toyota Corolla has a vacuum leak.