Few things make drivers more uneasy than the check engine light suddenly appearing on the dashboard. While the light can signal a wide range of issues, it always means your vehicle’s onboard computer has detected something abnormal. Ignoring it can lead to bigger, more expensive problems later on, so it’s best to visit the shop for diagnostics ASAP. At HESCO Automotive & Performance Center, we provide expert check engine light diagnostics and repair in the greater Birmingham, AL area. Here are four common car issues that cause the check engine light to illuminate.

Faulty Oxygen Sensor
One of the most common reasons for a check engine light is a failing oxygen sensor. This sensor monitors the amount of unburned oxygen in the exhaust and helps the engine adjust its air-fuel mixture. When it malfunctions, the vehicle may burn more fuel than necessary, decreasing fuel-economy and increasing emissions. If left unchecked, a bad oxygen sensor can also damage the catalytic converter. Replacing it promptly helps your engine run efficiently and prevents further complications.

Malfunctioning Catalytic Converter
The catalytic converter is a vital emissions control component that converts harmful gases into safer emissions. When it begins to fail, the vehicle may experience sluggish performance and decreased fuel-economy. A failing catalytic converter will almost certainly trigger the check engine light. 

Faulty Spark Plugs/Ignition Coils
Spark plugs and ignition coils are essential for igniting the fuel-air mixture in the engine. When they wear out or fail, the engine may misfire, run rough, or struggle to accelerate. These misfires can be quickly detected by the computer system, causing the check engine light to come on. Replacing spark plugs and coils is relatively inexpensive and can restore smooth performance.

Problems with the Mass Airflow Sensor
The mass airflow (MAF) sensor measures how much air is entering the engine so that the computer can balance the fuel mixture correctly. A failing MAF sensor can cause stalling, poor fuel-economy, and sluggish acceleration. Replacing the sensor usually resolves the problem.

Check Engine Light Diagnostics & Repair in Birmingham, AL

When you need engine diagnostics and repair in Birmingham and the surrounding area, contact HESCO Automotive & Performance Center at (205) 526-3796. At our nearby auto shop, we can expertly address your vehicle’s repair and maintenance needs. Feel free to give us a call to make an appointment!