The check engine light can illuminate for a variety of reasons, and serves as a warning that there is a problem with the vehicle's engine, emissions system, or other related components. When the check engine light flashes on, it’s important to identify and address the underlying issues before it escalates. At Jimmy’s Top Tech Auto, we provide expert check engine light diagnostics and repair in the greater Austin, TX area. Here’s a look at some of the common check engine light triggers.



Faulty Oxygen Sensor: Oxygen sensors monitor the level of oxygen in the exhaust gasses and help control fuel injection and emissions. A malfunctioning sensor can lead to decreasing gas mileage.

Loose or Damaged Gas Cap: A loose, damaged, or missing gas cap can cause a gas vapor leak, which can trigger the check engine light.

Catalytic Converter Issues: Problems with the catalytic converter, such as a malfunction or a clog, can cause the check engine light to come on. Signs of catalytic converter trouble include decreased acceleration and a sulfurous odor.

Faulty Mass Airflow Sensor: The mass airflow sensor measures the amount of air entering the engine and helps the engine control unit adjust the air/fuel mixture. A malfunctioning sensor can lead to poor engine performance.

Spark Plug and Ignition System Problems: Misfiring spark plugs or issues with the ignition system can trigger the check engine light. This can result in reduced engine power and increased emissions.

Excessive Emissions: Vehicles are equipped with emission control systems, and if emissions exceed acceptable levels, the check engine light can illuminate.

Thermostat Issues: Problems with the engine's thermostat can affect engine temperature and trigger the check engine light.

Battery or Charging System Problems: Issues with the vehicle's battery or charging system can sometimes cause the check engine light to come on.

Check Engine Light Repair in Austin, TX

When you need check engine light diagnostics and repair in Austin and the surrounding area, contact Jimmy’s Top Tech Auto at (512) 768-2965. Feel free to give us a call today to make an appointment!