4 Common Reasons Why Your European Car's Check Engine Light Could Come On

Autobahn Specialists • 23 June 2025

European cars are known for their performance, precision engineering, and advanced technology. But even the most well-built vehicles are not immune to mechanical or electrical issues. When the check engine light comes on, it’s your car’s way of telling you something isn’t right under the hood. While the light can be triggered by a wide range of issues—from minor to serious—addressing it promptly is key to avoiding further damage. At Autobahn Specialists, we provide expert European check engine light diagnostics and repair in the greater Tacoma area. Here are four common reasons why the check engine light might come on in your European car.


Oxygen Sensor Malfunction
The oxygen sensor monitors the amount of unburned oxygen in your vehicle’s exhaust system. A faulty sensor can lead to poor engine performance, reduced fuel-economy, and increased emissions. If ignored, this issue can cause trouble with the catalytic converter.


Catalytic Converter Problems
The catalytic converter is responsible for reducing harmful emissions by converting exhaust gases into less toxic substances. If it becomes faulty, it can easily cause the check engine light to illuminate. A failing catalytic converter can reduce your car’s performance and fuel-economy. Because it’s such a crucial component, issues with it need to be addressed ASAP.


Faulty Mass Air Flow Sensor
The mass air flow (MAF) sensor measures the amount of air entering the engine and helps the computer determine the right amount of fuel to inject. A problem with the MAF sensor can cause rough idling, hesitation, and stalling, all while triggering the check engine light. 


Ignition System Issues
Problems with spark plugs, ignition coils, or related wiring can easily cause your check engine light to come on. Misfires and hard starts are often symptoms of an issue within the ignition system. If left unaddressed, these problems can lead to poor fuel-efficiency and other engine issues. 


European Engine Repair in Tacoma, WA

For European auto repair in Tacoma and the surrounding area, contact Autobahn Specialists at (253) 474-0177. At our local European auto shop, we can expertly handle your Euro car’s repair and maintenance needs. Feel free to give us a call to schedule an appointment!