San Antonio European Auto Repair 702 Reviews
Mon – Thu: 7:30 AM – 5:30 PM | Fri: 7:30 AM – 3:30 PM

2306 NE Loop 410 , San Antonio, TX 78217

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(210) 657-1180

Diagnose Your Check Engine Light at Autobahn Automotive Service

No one wants to be heading to the Fiesta San Antonio only to have that dreaded check engine light pop up on the dashboard of their vehicle. When that light comes on, it could mean so many different things, from something serious to something super simple.

At Autobahn Automotive, we can run a quick diagnostics test with our equipment and figure out why your dashboard is lit up. Our technicians know how frustrating that light can be, so we want to get it fixed, and you back out enjoying all the festivities – no matter the time of year!

European Auto Check Engine Light

We Service the Following Brands

At Autobahn Automotive Service, we provide a distinct and wide variety of services for the following brands:

European Vehicles:

Check Engine Light

The check engine light is a warning from your car’s onboard diagnostics system that something isn’t working as it should. It can be triggered by a wide range of issues—from something as simple as you forgot to tighten the gas cap when you got fuel to more serious problems like a malfunctioning sensor or engine trouble. While the light doesn’t always mean a major issue, you don’t want to wait to have it checked out. A diagnostic scan can pinpoint the cause and help prevent potential damage and keep money in your pocketbook!

Reasons Your Check Engine Light Is On

You may find yourself thinking, ‘That was silly,’ when the light is on for something simple – but when it’s something bigger, you’ll be happy that it gave you a warning.

  • 1. Loose or Faulty Gas Cap
    One of the most common causes is that if the cap is loose, cracked, or missing, it can trigger the light due to fuel system pressure loss. Sometimes, you are just in a hurry, and that cap can be loose, and you’ll see that light pop up.
  • 2. Faulty Oxygen Sensor
    The O2 sensor monitors exhaust gases. If it fails, it can affect fuel efficiency and emissions. You’ll start seeing your fuel mileage drop, and you’ll find yourself at the gas station more often.
  • 3. Malfunctioning Catalytic Converter
    This part reduces harmful emissions. A failing catalytic converter can cause poor performance and increased pollution.
  • 4. Bad Spark Plugs or Ignition Coils
    Worn spark plugs or faulty coils can cause misfires, reduced power, and fuel inefficiency. You want to have your spark plugs and coils checked on a regular basis for wear and tear.
  • 5. Mass Airflow Sensor Issues
    This sensor controls how much air enters the engine. If it’s dirty or malfunctioning, it can cause poor acceleration and stalling.
  • 6. Faulty EVAP System Components
    The evaporative emissions system controls fuel vapors. A leak or failed part can trigger the light.
  • 7. Engine Misfires
    Misfires can be caused by fuel delivery issues, spark problems, or sensor malfunctions. They usually affect drivability and make it not so fun to be behind the wheel.
  • 8. Transmission Problems
    Some transmission issues can cause the check engine light to appear, especially if they’re affecting engine performance.
  • 9. Failing Battery or Charging System
    Low voltage or charging problems can sometimes trigger warning lights, including the check engine light.
  • 10. Sensor or Wiring Problems
    A faulty sensor or even a loose wire connection can confuse the computer and cause the light to come on.

Common FAQs About Check Engine Lights

What does the check engine light mean?
It means your car’s computer has detected a problem with the engine, emissions, or powertrain systems. It could be minor or something more serious. That little light is giving you the heads up to head on in to a shop and get it checked out.
Can I keep driving with the check engine light on?
If the light is steady and the car seems to run normally, you can usually drive short distances—but get it checked soon. If it’s flashing, pull over safely and call a mechanic—this often signals a serious issue like a misfire.
What’s the first thing I should check?
Start with the gas cap. If it’s loose, cracked, or missing, tighten or replace it. If the light doesn’t turn off after a few drives, there may be another issue.
How do I turn off the check engine light?
The light will usually go off once the issue is fixed. You can also reset it with a code scanner, but if the problem isn’t resolved, it’ll come back on.
Why does it turn on and off randomly?
Intermittent issues like sensor glitches or wiring problems can cause the light to come and go. It’s best to scan for codes even if the light goes off on its own.
Can weather or temperature cause the light to come on?
Extreme cold or moisture can affect sensors and battery voltage, sometimes triggering the light—but it usually means there’s something worth checking out.

At Autobahn Automotive Service, we want to make sure you have the best experience – for both you and your vehicle! We can be found at:

  • 2306 NE Loop 410, San Antonio, TX

If you’ve already checked that your gas cap isn’t the issue and the check engine light is still on – go ahead and give us a call to help get the problem fixed!

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