What can set off a check engine light?

What can set off a check engine light?

Loose or Broken Gas Cap The best news that you get get in regard to a check engine light is that it was caused by a loose gas cap. A loose, cracked or otherwise damaged cap can allow gasoline vapors to evaporate out of the filler hose, triggering the light! Always be sure your gas cap is tight every time you fill up!

Can electrical issues cause check engine light?

A sudden problem with your car’s electrical system can be a serious issue, especially if the “check engine” light comes on. Other electrical problems can include a headlight bulb that has blown out, a light inside your vehicle stops working, or the car’s power locks or windows are giving your trouble.

Can an oil change trigger the check engine light?

An illuminated check engine light is the first warning sign that your vehicle needs an oil change. It can activate because the oil is too dirty or when there’s not enough flowing throughout the engine.

Can a bad alternator cause the check engine light to come on?

A faulty alternator not only turns the check engine light on, it also risks your safety. If the alternator fails when you’re driving, the car radio will go off, the interior lights will dim, and you will experience extreme difficulty in driving. The reason being all power is lost.

Can the check engine light come on for no reason?

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.

What’s the difference between a flashing and solid check engine light?

When your Check Engine light comes on it is either solid or flashing. They mean two different things. A flashing light indicates a problem which needs to be addressed immediately. A solid light can be as insignificant as a loose gas cap, or it could signal fuel, timing, or transmission troubles.

Will bad oxygen sensor cause check engine light come?

Faulty O2 Sensors The oxygen sensor, also known as the O2 sensor, measures the amount of unburnt oxygen in your exhaust system. A failing sensor can cause the check engine light to be triggered, though you can continue to drive relatively fine with it.

What does the Check Engine light on a Jeep Grand Cherokee mean?

Once a Jeep Grand Cherokee’s check engine light illuminates, it means the On-Board Diagnostic system has repeatedly detected an engine malfunction. A problem has to repeat itself several times before the Grand Cherokee’s On-Board Diagnostic system will give it a “fault” status.

Why does my check engine light keep coming on?

The tech then also stated it was a known mopar issue in Jeep Grand Cherokee line. The check engine light keeps coming on it has to do with the emissions control the vehicle does not run properly. It has been in the shop 3 times going on number 4 for the same exact problem.

Where is the diagnostic outlet on a Jeep Grand Cherokee?

Open the driver’s side door and plug your OBD-II scanner’s cable into the Grand Cherokee’s diagnostic outlet. This Data Link Connection will be located on the driver’s sidde of the Jeep, beneath the steering wheel, somewhere between the left kick a panel and the gas pedal.

What does the Check Engine light on a Mercedes Benz mean?

The check engine light is part of the onboard diagnostics system, and displays in a few different ways. It can say “Check Engine”, it can be a symbol of an engine, it can even be a combination of both. This light illuminates in either an amber or red color and is part of the diagnostics system found on your vehicle.