Why is my Check Engine Light on

Posted on August 27, 2020 by mike

We all dread it. The orange, engine shaped icon on your car dashboard that is programmed to turn on when the vehicle detects something is wrong. Do not panic if you see it, this does not necessarily mean that you will be cleaning out your wallet. Some problems that trigger the check engine light are sometimes basic and a quick fix. However, do not ignore this and check it out as soon as possible. Listed below are some of the common reasons that your check engine light may be on:

Catalytic Converter Failure

Every late model car that runs on gasoline has a catalytic converter. It is integrated into a vehicle’s exhaust system, and turns the carbon monoxide generated during the combustion process into carbon dioxide. The part is fairly simple, and its failure can often be prevented. It is crucial that you schedule regular maintenance, such as oil changes, on time to keep your car’s catalytic converter in working order. Always keep an eye out for unusual sounds or discolored smoke coming from the exhaust.

Mass Airflow Sensor Failure

The mass airflow (MAF) sensor monitors the amount of air that enters the engine. This piece is a part of the engine management system, meaning your car would not be able to adjust to changes in altitude without it. Keep a lookout for a rough idle, trouble starting, and a sudden change in the position of the throttle pedal , as these are symptoms of an MAF failure. Stalling and reduced gas mileage can also suggest a MAF problem.

Mass Airflow Sensor Failure

The mass airflow (MAF) sensor monitors the amount of air that enters the engine. This piece is a part of the engine management system, meaning your car would not be able to adjust to changes in altitude without it. Keep a lookout for a rough idle, trouble starting, and a sudden change in the position of the throttle pedal , as these are symptoms of an MAF failure. Stalling and reduced gas mileage can also suggest a MAF problem.

Issues With Aftermarket Alarm

If not installed properly, an aftermarket alarm can wreak havoc on your car. It can drain your battery, trigger the check engine light, or even prevent the vehicle from starting. However, when you are not expecting it, it can go off in the middle of the night because a leaf fell on the hood. If these issues sound familiar, you need to have your alarm fixed, reinstalled, or even replaced.

Vacuum Leak

Every car has a vacuum system that is responsible for a variety of functions. The brake booster is vacuum-operated, and the vacuum system also helps lower emissions that are harmful by routing the fumes as gasoline evaporates through the engine. A vacuum leak could be the issue if your car’s idle begins to surge or settles at unusually high rpm. Vacuum hoses can dry out and crack as they age, causing most vacuum leaks.

Exhaust Gas Recirculation Valve Failure

The exhaust gas recirculation (EGR) system lowers the amount of nitrogen oxide that leaves the car’s engine and helps it run more efficiently. The EGR valve can get clogged up or fail entirely. Even if you only have a small amount of mechanical ability, you can remove the valve, clean it, and reinstall it in a short amount of time.

Dead Battery

Although the battery is simple, it is one of the most important components of your car. Without the battery, your car will not start, light the road, or even charge your phone. Batteries last much longer than they used to, and they are maintenance free. It is a relatively easy task to change or charge your battery on your own. Keep in mind that in some late model cars the battery is buried under several plastic covers, making it more difficult to get to.

Contact German AutoSport for Repairs

If the check engine light is on in your vehicle, it’s time to take it into the shop for repairs. German AutoSport is an expert in German car repairs and maintenance. Give us a call today at (978) 388-1288 to schedule an appointment!