Few things grab a driver’s attention like the sudden glow of the check engine light. While it may be tempting to ignore it—especially if your car seems to be running fine—this warning light is your vehicle’s way of telling you something isn’t right. The issue could be minor, or it could be the first sign of a more serious problem developing under the hood. The important thing is to get the issue diagnosed ASAP. At Austin Auto Repair, we provide expert check engine light diagnostics and repair in the greater Austin, TX area. Here are four of the issues most frequently responsible for triggering this dashboard alert.

Faulty Oxygen Sensor

Your oxygen sensor measures the amount of unburned oxygen in the exhaust system and helps regulate fuel efficiency. When it fails, your engine may burn more fuel than necessary, reducing gas mileage and increasing emissions. A faulty oxygen sensor is one of the most common reasons the check engine light turns on. While the car may continue to run, ignoring this issue can eventually damage the catalytic converter, which is far more expensive to replace.

Failing Catalytic Converter

The catalytic converter plays a crucial role in reducing harmful emissions from your vehicle. When it begins to fail, the check engine light will likely illuminate. A failing catalytic converter can cause poor fuel-economy, reduced performance, and increased emissions. 

Malfunctioning Ignition Coils or Spark Plugs

Ignition coils and spark plugs are essential for starting your engine and keeping it running smoothly. When they wear out or malfunction, they can cause misfires, rough idling, and reduced power. These problems frequently trigger the check engine light. Replacing spark plugs is usually an easy and inexpensive fix, while coil replacement may cost more. Either way, quick action helps prevent further engine trouble.

Problems With the Mass Airflow Sensor

The mass airflow (MAF) sensor measures how much air enters the engine, helping the computer determine the correct amount of fuel to inject. If the MAF sensor becomes dirty or fails, your engine may run rich or lean, causing poor performance and reduced fuel-economy. A faulty MAF sensor often triggers the check engine light, and replacing it promptly helps ensure smooth engine operation.

Check Engine Light Repair in Austin, TX

For expert check engine light diagnostics and repair in Austin and the surrounding area, contact Austin Auto Repair at 512-865-6217. Feel free to give us a call to make an appointment!