Vehicles are built with a variety of components that work together to keep you moving. If one starts to fail, it may trigger the check engine light, alerting you to an auto repair problem. When this light turns on, it often means you need to see a mechanic who can resolve the issue. Below are three of the most common reasons why you might see this alert on your vehicle’s display.

Loose Gas Cap

The gas cap is responsible for maintaining the pressure in your fuel tank. If it isn’t screwed on all the way or has become damaged, the check engine light will turn on to let you know it’s time for an auto repair. Not replacing the cap can cause your fuel to evaporate quickly, leading to decreased gas mileage and increased emissions. If the check engine light stays on even after you adjust the cap, make an appointment with a mechanic.

Malfunctioning Oxygen Sensor

Vehicles have multiple oxygen sensors in place, and if one isn’t working properly, it sends a signal to the onboard computer and activates the check engine light. When these sensors encounter a problem, your car will burn almost twice as much fuel as it normally does. Not only does this mean you have to buy gas more often, but it can also lead to problems like clogged fuel filters and a damaged catalytic converter.

Burned-Out Spark Plug & Wires

If your vehicle is old, you need to have the plugs and wires replaced every 25,000 miles. Newer models can go for 100,000 miles or more before needing new parts. However, an undetected issue under the hood can lead them to burn out prematurely. If you see the check engine light, have a mechanic check the plugs and wires to determine whether they need to be replaced. You should also have an auto repair expert check these parts during every oil change.

If your check engine light comes on, you need to take your vehicle in for auto repairs right away. Postponing a trip to the mechanic can lead to costly mechanical failures. The team at Alaskan Auto Center in Anchorage will get to the bottom of your car’s maintenance problem. They have over 20 years of experience in diagnosing and repairing issues that activate the check engine light. Visit them online or call (907) 522-7035 to learn more about their services.