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What to Do When Your Check Engine Light Comes On: Trust Autobahn Automotive for Expert Diagnostics

There are few things that can cause anxiety in a car owner like the check engine light coming on. There’s always the uncertainty — what does it mean? Is it something minor and easy to fix, or a major, costly problem?

At Autobahn Automotive, we know how frustrating and concerning it can be when your check engine light comes on, we help you get to the bottom of the issue with expert diagnostic services tailored specifically to European vehicles. We have cutting-edge diagnostic equipment and skilled technicians, so we can quickly figure out what is causing the light and get you back on the road safely.

We Service European Brands

At Autobahn Automotive, we specialize in serving European vehicles, so we are able to diagnose and repair the complex systems each of these cars have. We offer check engine light diagnostics for:

These brands are all known for their advanced technology and engineering, so they need specialized care — care we can offer thanks to our highly trained technicians and cutting-edge tools.  

Why Is Your Check Engine Light Important?

The check engine light in your car is part of what we call the OBD, or On-Board Diagnostics. The OBD continuously monitors your engine’s performance and emissions, so when a problem is detected it lights up the check engine light to let you know that something is wrong. While the light can indicate a number of potential issues, from simple to complex, it is important to not ignore it.

Common Reasons for the Check Engine Light

Here are some of the most common reasons that your check engine light might come on:

  • Loose or damaged gas cap: As strange as it may sound, one of the most common reasons for a check engine light to come on is a loose or damaged gas cap. The cap is what keeps the fuel system sealed so that it can maintain the pressure it needs to operate properly. If that seal isn’t maintained, the check engine light may come on. 
  • Oxygen Sensor Failure: The oxygen sensor, which helps ensure the proper fuel-to-air ratio in the engine, is an essential part of the engine running as it should. If the sensor fails, it can cause poor fuel economy and increased emissions. 
  • Catalytic Converter Issues: The catalytic converter is an essential part of your car’s exhaust system. It’s responsible for reducing harmful emissions, and if it isn’t working properly, it can trigger the check engine light. 
  • Mass Airflow Sensor Problems: The mass airflow sensor measures how much air is coming into the engine, and works along with the oxygen sensor to ensure the fuel-to-air ratio is correct. When this sensor malfunctions it can cause poor fuel efficiency and performance problems. 
  • Spark plug or ignition coil issues: Spark plugs ignite the air-fuel mixture in the engine, and ignition coils are what create the electricity needed for this process. If either one is faulty, it can cause misfires and trigger the check engine light.
  • EGR Valve Failure: The EGR valve reduces emissions by recirculating some of the exhaust gasses into the engine. If the valve fails, it can cause rough idling, poor fuel economy, and can definitely cause a check engine light.

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Check Engine Light FAQs

How long can I drive with the check engine light on?
It depends on the issue causing the light to come on. If the light is flashing, you should stop driving immediately and have the vehicle towed to a garage to address the problem. If the light is steady, it is usually safe to drive for a short while, but we recommend scheduling a check as soon as possible to prevent more damage.
Can the check engine light reset itself?
In some cases, the check engine light might turn off on its own if the issue resolves. However, even if the light turns off, it’s recommended to get the vehicle inspected for any underlying issues.
Why does my check engine light turn off and on?
Intermittent check engine lights can be incredibly frustrating, especially if you schedule an appointment while it’s on and then it turns off before you make it to the garage. It can be caused by temporary issues like a brief misfire, or an issue that might reoccur if left unattended, like a loose connection. If your check engine light is turning on and off repeatedly, it’s important to get it checked out.

At Autobahn Automotive, we’re here to provide the diagnostics and repairs you need. When your European vehicle’s check engine light comes on, don’t wait — make an appointment today so we can help you get to the bottom of the issue as quickly as possible.

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