4 Common Reasons the Check Engine Light Turns On

The check engine light is one of the most important warning indicators on your vehicle's dashboard. While it can be alarming to see it illuminate, the light simply means your vehicle's onboard diagnostic system has detected a problem that needs attention. Some issues are relatively minor, while others can affect engine performance and lead to expensive repairs if ignored. Having the problem diagnosed promptly is the best way to keep your vehicle running reliably. At Brake Masters, we provide expert check engine light diagnostics and repair in the greater Camarillo area. Here are four common check engine light issues.
Faulty Oxygen Sensor
Oxygen sensors monitor the amount of oxygen in the exhaust and help the engine computer maintain the proper air-fuel mixture. As these sensors wear out, they can cause reduced fuel-economy, increased emissions, and poor engine performance. Faulty oxygen sensors are one of the most frequent reasons the check engine light illuminates.
Worn Spark Plugs or Ignition Coils
Spark plugs and ignition coils work together to ignite the air-fuel mixture inside the engine. When these components wear out or fail, the engine may misfire, idle roughly, hesitate during acceleration, or lose power. Ignition system problems commonly activate the check engine light and should be repaired promptly to avoid additional engine trouble.
Mass Air Flow Sensor Problems
The mass air flow (MAF) sensor measures the amount of air entering the engine so the computer can determine the proper amount of fuel to inject. A dirty or faulty MAF sensor can lead to poor acceleration, rough running, reduced fuel-economy, and increased emissions. Cleaning or replacing the sensor often restores proper engine performance.
Catalytic Converter Issues
The catalytic converter helps reduce harmful exhaust emissions before they exit the tailpipe. If it becomes clogged or damaged, you may notice poor engine performance, reduced fuel-economy, or sluggish acceleration in addition to the check engine light. A catalytic converter issue may also result in an odor similar to rotten eggs.
Check Engine Light Repair in Camarillo, CA
For expert auto repair in Camarillo, CA and the surrounding area, contact Brake Masters at (805) 914-0312. Feel free to give us a call to make an appointment!












