Few things make drivers more uneasy than seeing the check engine light suddenly appear on the dashboard. This warning can indicate a minor issue or a serious problem that needs immediate attention, but it should never be ignored. Modern vehicles rely on complex systems and sensors to operate efficiently, and the check engine light is your car’s way of telling you something isn’t working as it should. At Presto Auto Electric, we provide expert check engine light diagnostics and repair in the greater Carson City area. Here are four issues frequently responsible for triggering the check engine light.

Faulty Oxygen Sensor

One of the most common reasons the check engine light turns on is a failing oxygen sensor. This component monitors the amount of unburned oxygen in your exhaust system and helps your engine manage the right air-to-fuel ratio. When an oxygen sensor malfunctions, it can cause poor fuel-economy, higher emissions, and rough engine performance. If left unaddressed, it may also lead to damage to the catalytic converter. Replacing a faulty sensor promptly helps ensure your engine continues to run efficiently.

Failing Catalytic Converter

The catalytic converter helps reduce harmful emissions by converting toxic gases into safer ones before they exit the exhaust system. When this component begins to fail, the check engine light typically comes on. A failing catalytic converter can cause poor engine performance, decreased fuel-efficiency, and unusual odors. 

Bad Spark Plugs or Ignition Coils

Spark plugs and ignition coils play crucial roles in igniting the air-fuel mixture inside your engine. When these components wear out or fail, the engine may misfire, run rough, or hesitate during acceleration. These issues commonly trigger the check engine light. Replacing worn spark plugs or faulty coils helps restore smooth performance.

Mass Airflow Sensor Issues

The mass airflow sensor measures the amount of air entering the engine, allowing the car’s computer to adjust fuel delivery. If the sensor gets dirty or fails, it can cause poor acceleration, reduced fuel-efficiency, and stalling. A malfunctioning mass airflow sensor often triggers the check engine light and should be addressed quickly to maintain proper engine performance.

Check Engine Light Diagnostics and Repair in Carson City, NV

For expert auto repair in Carson City and the surrounding area, contact Presto Auto Electric at (775) 430-4546. Feel free to give us a call to make an appointment for car care in greater Carson City, NV!