The check engine light can come on for many reasons. For example, something as simple as a loose gas cap can trigger the warning. And major problems, such as failed internal engine components, can turn on the light, as well.
Why did my check engine light come on all of a sudden?
Something as simple as forgetting to replace the gas cap could cause your “check engine” light to come on. … Faulty ignition – Spark plugs ignite the fuel as it flows through the engine’s cylinders. Failing to replace a spark plug could lead to catalytic converter failure or other serious problems.
Does check engine light mean nothing?
Normally, the appearance of a check engine light indicates a problem somewhere in your vehicle, but nothing seems amiss. Your car is still running at its best and there seems to be absolutely nothing wrong. … It doesn’t have to take a mechanical issue in order for this light to appear.
What can cause engine light to come on?
What causes the check engine light to come on?
- Oxygen sensor (or O2 sensor) …
- Catalytic converter failure. …
- Spark plug or ignition coil failure. …
- Airflow sensor failure. …
- Replace the thermostat. …
- Replace exhaust gas recirculation (EGR) valve and clean all EGR ports.
Can I drive with check engine light on?
Can you drive a car with the engine light on? It’s okay to drive for a few miles, but be sure to schedule an inspection of the engine as soon as possible. If the check engine light comes on while you’re driving, don’t panic! Pay attention and see if the car is driving any differently than normal.
Will check engine light reset itself?
Your vehicle’s check engine light will will reset by itself once the issue or problem has been repaired; this is true for most models. … A vehicle cycle is when you start your vehicle and drive it till it warms up, and then you turn the car off.
Where do I go when my check engine light is on?
A flashing check engine light is typically indicative of a serious problem affecting your vehicle’s ignition, fuel or emission systems. If your check engine light is on or flashing, it’s time to come into your neighborhood Firestone Complete Auto Care store for a car diagnostic.
What to do if engine light is on?
What to Do About the Check Engine Light
- Look for a serious problem that requires immediate attention. Check your dashboard gauges and lights for indications of low oil pressure or overheating. …
- Try tightening your gas cap. …
- Reduce speed and load. …
- Use built-in diagnostic services, if available.
Why is my car shaking and check engine light on?
The check engine light will come on when any of the following issues are detected by your vehicle’s computer. Shaking or vibration may be caused by things such as faulty spark plugs, poor fuel pressure or misfires. … The other issue that may cause this type of shaking or vibration is a broken engine mount.