What Could Cause The Check Engine Light To Come On?

Can I drive with check engine light on?

If the check engine light comes on while you’re driving, it can be unnerving.

The check engine light means there’s a problem somewhere in your emissions system.

Regardless, you’re safe to drive for now as long as the car isn’t performing strangely.

Just have the check engine light checked and the problem repaired..

How do I turn my check engine light off?

The simplest most straightforward way to get rid of the check engine light is to drive it for a little bit, and the light will turn off by itself. Once you drove your car for a couple of days (e.g., usually three days), the check engine light should be gone.

Why is my check engine light on but no codes?

Generally if the light is coming on and no codes are stored the processor that triggers the light is faulty or the circuit is shorted to power. disconnect that circuit from the ECU if the light goes off probably an issue with the ECU, if the light stays on look for a short to power on that circuit.

How can I tell if my gas cap is bad?

Usually a bad or failing gas cap will produce a few symptoms that can alert the driver of a potential issue.Cap does not tighten properly. One of the most common symptoms of an issue with the gas cap is a cap that does not tighten properly. … Fuel smell from the vehicle. … Check Engine Light comes on.

Will 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.

What is the most common reason for check engine light?

Common causes of a check engine light Gas cap is loose: Tighten the gas cap. If you’ve lost it, replace it with a new one. Oxygen sensor is bad: You’ll need a new sensor — but identify which one is bad first. Spark plugs may be fouled or failing: Replace the spark plugs.

Where do I go when my check engine light is on?

It should be taken to a repair garage soon, Calkins says. Check engine light flashing: If the symbol is blinking or flashing, this is a more serious problem. In these cases, Calkins says, you should pull over at a safe location, shut off the engine and have the car towed to a repair facility for diagnosis.

How many miles do you have to drive to clear a check engine light?

100 milesHow many miles need to be driven to reset check engine light for inspection? After you clear the computer, you need to drive up to 100 miles to give it a chance to monitor all the sensors and register the results. Sometimes it may be completed in about 50 miles.

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 check engine light serious?

When your car’s check engine light illuminates your dashboard, it’s usually accompanied by a sinking feeling in the pit of your stomach. The light could be a minor issue, such as a faulty gas cap, or it could mean something more serious, such as a misfiring engine.

Can engine light come on for no reason?

Fuel system Issues Something as simple as forgetting to replace the gas cap could cause your “check engine” light to come on. … A loose or broken gas cap can dramatically reduce fuel efficiency and increase emissions. MAF Sensor – Mass airflow sensors are a common item to go bad.

What do you do when your engine light comes on?

What to Do About the Check Engine LightLook 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.

Where can I get free check engine light diagnosis?

Auto parts store. AutoZone is well known for doing free check engine light diagnostics. Just go into the store and ask someone behind the counter.

What does a solid engine light mean?

If the engine light comes on and flashes, that indicates an immediate concern. You need to find a safe place to pull over and turn your vehicle off. … A solid Check Engine Light can mean something like a loose gas cap, or it can indicate a more in-depth problem like a fuel, timing, or transmission issue.

Can Autozone reset check engine light?

Re: Clearing car “Check Engine” light In my area Autozone will check and reset check engine lights for free.