When the check engine light illuminates on your dashboard, it indicates that something in your car’s system needs attention. While some causes are minor, others require prompt repairs to prevent further damage. The important thing is to get to the shop for diagnostics so the issue can be identified and addressed ASAP. At Austin Auto Repair, we provide expert check engine light repair in the greater Austin, TX area. Here are five common reasons why your check engine light may turn on.

Faulty Oxygen Sensor

Oxygen sensors monitor the amount of unburned oxygen in your vehicle’s exhaust, and send data to the engine’s computer to adjust the air-to-fuel ratio, ensuring efficient combustion. When the sensor malfunctions, the engine may use more fuel than necessary, leading to poor gas mileage.

Catalytic Converter Problems

The catalytic converter reduces harmful emissions by converting exhaust gasses into less toxic substances. If it’s clogged or damaged, it can trigger the check engine light and reduce engine performance. Common symptoms of a faulty catalytic converter include sluggish acceleration and decreased fuel-efficiency. 

Malfunctioning Mass Airflow Sensor

The mass airflow (MAF) sensor measures the air entering the engine, which helps determine the correct fuel amount for optimal combustion. When the MAF sensor malfunctions, it can cause poor fuel-economy, rough idling, and even engine stalling. 

Loose or Damaged Gas Cap

One of the simplest reasons for a check engine light is a loose or damaged gas cap. The gas cap keeps your fuel system sealed. If it’s faulty, fuel may evaporate before your car gets the chance to run on it.

Failing Spark Plugs or Ignition Coils

Spark plugs and ignition coils are essential components for igniting the air-fuel mixture in your engine’s cylinders. When they fail, it can result in misfires, reduced power, and increased emissions. Regularly replacing spark plugs and coils as recommended by your vehicle’s maintenance schedule can help avoid this issue.

Check Engine Light Repair in Austin, TX

For check engine light diagnostics and repair in Austin and the surrounding area, contact Austin Auto Repair at 512-865-6217. At our nearby auto shop, we can expertly handle your vehicle’s repair and maintenance needs. Feel free to give us a call to schedule an appointment!