Munich Autos Blog
Why is my BMW’s check engine light on? Here are 5 common triggers

If your BMW’s check engine light flashes on, you’ll want to promptly visit the shop for computerized diagnostics. By getting to the mechanic quickly, you’ll have the best chance to identify and take care of the issue before it gets worse and potentially leaves you stranded. At Munich Auto, we provide expert BMW check engine light diagnostics and repair in the greater Austin, TX area. Here are five common reasons the check engine light illuminates.
Failing Catalytic Converter
The catalytic converter plays a crucial role in reducing harmful emissions by converting pollutants into less harmful substances. A faulty catalytic converter can trigger the check engine light and, if left unaddressed, lead to more serious issues.
Faulty Oxygen Sensor
Oxygen sensors monitor the level of oxygen in the exhaust gasses, providing important data for the engine control module. A faulty sensor can lead to poor fuel efficiency and increased emissions. Regular maintenance checks and timely replacement can prevent this issue from affecting your BMW's performance.
Loose/Faulty Gas Cap
The gas cap plays an important role in maintaining the proper pressure in the fuel system. A loose or damaged cap can result in fuel vapors escaping and negatively impact your car's performance. Thankfully, this is a simple issue to fix.
Issues with the Ignition System
Faulty spark plugs, ignition coils, or spark plug wires can disrupt the combustion process in the engine, causing the check engine light to illuminate. Regularly checking and replacing these components as part of routine maintenance can help prevent ignition system issues and help to ensure that your BMW's engine runs smoothly.
Malfunctioning Mass Airflow Sensor
The mass airflow sensor measures the amount of air entering the engine, helping the engine control module adjust the fuel injection for optimal combustion. When this sensor malfunctions, it can disrupt the air-fuel ratio, leading to increased emissions and decreased performance.
BMW Check Engine Light Repair in Austin, TX
When you need BMW or Mini repair in Austin and the surrounding area, contact Munich Auto at
512-294-3796. Feel free to give us a call today to schedule an appointment!









