The check engine light — more formally known as the malfunction indicator lamp — is a signal from the car’s engine computer that something is wrong. … If the light begins flashing, however, it indicates a more serious problem, such as a misfire that can quickly overheat the catalytic converter.
What could cause the check engine light to come on?
Finally, worn spark plugs or plug wires will result in a check engine warning. Just about anything wrong with your vehicle’s ignition system will likely cause your check engine light to come on. … Stalls are another indicator of spark plug trouble.
Is it safe to drive your car with the check engine light on?
If the check engine light comes on while you’re driving, don’t panic! … If nothing seems out of the ordinary, you can continue driving the car. The cause could be anything from a faulty oxygen sensor to a bad MAF sensor. It could also mean your catalytic converter has failed and quit working.
What do you do when the check engine light comes 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.
How many miles can you drive with check engine light on?
You can still drive your car for 50 to 100 miles (80 to 160 kilometers) with the Check Engine Light is on. Continue taking several separate trips until the car’s system assesses all the car components’ status several times. “Separate trips” means turning off the engine and starting another trip every time.
Can low oil cause the check engine light to come on?
Low oil pressure: If your car is low on oil, it can cause your check engine light to go off. This is often shown in its own glowing light along with the check engine light on the dashboard. Overheating: If your car’s engine temperature is heating up, it can once again trigger the check engine light.
Can AutoZone tell me why my check engine light is on?
Does AutoZone Scan Check Engine Lights? AutoZone does. If your light is on, and you are wondering why, head down to your local AutoZone where one of our store associates can help diagnose the issue through our free Fix Finder service.
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.
How long does it take for check engine light to go off after replacing gas cap?
The check engine light should go off after you drive for several minutes if the light was caused by a loose gas cap. Pay attention to the dashboard after the check engine light experience. If you find that the light keeps coming on, and goes off again once you tighten the gas cap, then your gas cap is too loose.