Few dashboard indicators are as vague as the check engine light. When it flashes on, you might worry whether you’ll need roadside assistance in the near future, or you might wonder if the light means anything at all. To address this confusion, we’re listing five common reasons why your car’s check engine light might be on.

5 Issues That Can Trigger a Check Engine Light

1. Loose Gas Cap

If you notice that your check engine light comes on after you’ve refilled your gas, your gas cap could simply be loose. The cap is important because it keeps fuel from evaporating from your tank and helps maintain fuel efficiency. That’s why newer cars will trigger the check engine light if your cap is loose.

2. Faulty Oxygen Sensor

While having a faulty oxygen sensor likely won’t make you require roadside assistance, it could prevent you from passing your state’s vehicle inspection. The oxygen sensor monitors your exhaust system and helps to accurately track your fuel consumption. When one or more of your sensors go out, it can cause the check engine light to come on.

3. Bad Spark Plugs

Your spark plugs are essential to getting your engine to combust. When they age, they can misfire and cause issues with your vehicle’s ignition. If you haven’t changed your spark plugs anytime between the last 30,000 to 60,000 miles, they might be the reason your check engine light is on.

4. Low Oil Pressure

One of the more common causes of the check engine light, low oil pressure can be the result of an improper oil change or air getting into your pump. If you are having issues with your oil pressure, have your vehicle serviced immediately. If ignored, this issue can become serious enough to cause you to require roadside assistance.

5. Faulty Emissions System

Your emissions system is designed to help protect the environment from your engine’s harmful emissions. However, when the system malfunctions, it can cause your check engine light to come on. Failing to address a faulty emissions system can affect your vehicle’s safety and fuel efficiency.

 

If a serious issue triggers your check engine light, you may need to contact roadside assistance. If that happens, call the professionals at Platinum Towing and Transport in St. Louis, MO. Their experienced team specializes in vehicle towing, tire changes, and unlocks, and they can help you get where you need to be regardless of issues with your vehicle. Next time you need to get your vehicle somewhere, give them a call at (314) 300-8694 or visit them online.