Mata Auto Repair Blog
5 Common Reasons the Check Engine Light Illuminates

The check engine light is one of the most critical indicators on your dashboard, signaling that something in your vehicle requires attention. While it’s easy to dismiss this warning as a minor issue, it can point to problems that may worsen if left unaddressed. At Mata Auto Repair, we provide expert check engine light diagnostics and repair in the greater Omaha area. Here’s a look at five common check engine light triggers.
Malfunctioning Catalytic Converter
The catalytic converter is an essential component of your car’s emissions system, converting harmful gases into less harmful emissions. If it fails, it can reduce engine performance, increase emissions, and trigger the check engine light.
Failing Oxygen Sensor
The oxygen sensor monitors the amount of unburned oxygen in your vehicle’s exhaust and helps ensure the engine runs efficiently. As the miles add up, the sensor can wear out, leading to poor fuel economy and higher emissions. A faulty oxygen sensor can cause the check engine light to illuminate and should be replaced promptly to avoid issues with the catalytic converter.
Worn or Failing Spark Plugs
Spark plugs are vital for igniting the fuel-air mixture in your engine. When they wear out or fail, the engine may misfire, leading to reduced performance and increased emissions. Misfiring can also cause the check engine light to activate. Replacing spark plugs and wires as part of regular maintenance can prevent this issue.
Loose or Damaged Gas Cap
The gas cap seals the fuel system. If it’s not properly tightened on, fuel may evaporate before you get the chance to use it, and your check engine light may come on.
Issues with the Mass Airflow Sensor
The mass airflow (MAF) sensor measures the amount of air entering the engine and helps determine the correct fuel-to-air ratio. If the MAF sensor malfunctions, it can lead to engine stalling, poor fuel-efficiency, and increased emissions. This problem can trigger the check engine light and should be addressed to maintain optimal engine performance.
Check Engine Light Repair in Omaha, NE
For
check engine light diagnostics
and repair in Omaha, NE, contact Mata Auto Repair at
(402) 205-8750. At our local auto shop, we can expertly address your vehicle’s repair and maintenance needs. Feel free to give us a call to schedule an appointment for auto care in Omaha!









