Few dashboard warnings cause as much concern for drivers as the check engine light. While this warning light doesn't always indicate a serious problem, it does signal that your vehicle's onboard diagnostic system has detected an issue that requires attention. Ignoring the light can allow minor problems to become major repairs, so it's important to understand some of the most common causes. At Express Oil Change & Tire Engineers, we provide expert check engine light diagnostics and repair in the greater Orlando area. Here are four frequent check engine light triggers that drivers encounter.

Faulty Oxygen Sensor

Oxygen sensors monitor the amount of oxygen in the exhaust stream and help the engine maintain the proper air-fuel mixture. When this sensor fails, fuel-efficiency can decrease and emissions may increase. A faulty oxygen sensor is a common reason for check engine light activation and should be addressed promptly to avoid additional problems.

Failing Spark Plugs or Ignition Coils

Spark plugs and ignition coils play a critical role in the combustion process. When these components wear out or malfunction, the engine may misfire, run rough, or lose performance. In many cases, ignition-related problems will trigger the check engine light and may worsen if left unresolved.

Catalytic Converter Problems

The catalytic converter helps reduce harmful emissions by converting pollutants into less harmful gases. If it becomes clogged or damaged, engine performance may suffer and emissions levels can increase. With a catalytic converter issue, you might also notice a smell similar to rotten eggs.

Mass Airflow Sensor Failure

The mass airflow sensor measures the amount of air entering the engine and helps determine the correct amount of fuel needed for combustion. A failing sensor can cause poor acceleration, rough idling, and reduced fuel-economy. Replacing or cleaning the sensor can often restore proper performance.

Check Engine Light Repair in Orlando, FL

For expert auto repair in Orlando and the surrounding area, contact Express Oil Change & Tire Engineers at 407-502-4984. Feel free to give us a call to schedule an appointment for car care in greater Orlando!