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Common Causes of a Dashboard Check Engine Warning

A recent study proved that the check engine light is incredibly effective in warning drivers of engine trouble. In fact, the check engine light may be the only sign that there is something wrong underneath the hood. Aero Auto Repair can determine the exact reason why your vehicle’s check engine light has come on. Here are the most common causes of this dashboard warning.

Clogged Catalytic Converter

If your catalytic converter gets clogged, it will malfunction. When it does, you will end up with a check engine warning and the smell of rotten eggs in your vehicle’s exhaust. You might also notice excessive black exhaust flowing out of the tailpipe and your engine will suffer from performance problems.

Faulty EVAP System

The EVAP system is careful to make sure that all fuel evaporation is contained in does not make its way into the environment. If there is a problem with this system, your check engine light will come on. You may also notice gasoline odors. This makes driving your automobile dangerous due to carbon monoxide.

Faulty Engine Control Unit

The engine control unit is your automobile’s main computer chip. If it malfunctions, the check engine light will turn on. Unfortunately, your engine may also turn off. Once the engine has turned off, you will not be able to get it started again. You will need to have the engine control unit replaced.

Faulty Mass Airflow Sensor

The mass airflow sensor can get dirty and malfunction. When this happens, it is unable to track the air flowing into the engine. Consequently, your engine will suffer from performance problems and the check engine light will turn on. You may also have difficulty starting your automobile.

Faulty Oxygen Sensor

The oxygen sensor can go bad anywhere from 30,000 miles to 100,000 miles; it depends on your vehicle’s age. If this sensor malfunctions, you will suffer from engine performance issues and poor fuel economy. The check engine light will also turn on.

Loose Fuel Cap

There is one problem that turns on the check engine light that can be quickly resolved. This is a loose fuel cap. The fuel cap seals off the tank to make sure that fuel does not evaporate out of it. Ensuring that the cap is secured will turn off the check engine light.

Worn Spark Plugs

Finally, the spark plugs can also trigger a check engine warning. Aside from the dashboard warning light, your engine will also misfire and stall frequently.

Call Aero Auto Repair in Vista, CA, today if your car, truck, or utility vehicle’s check engine light is on. We can find the problem and fix it.

Photo by baloon11 from Getty Images via Canva Pro
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