Check Engine Light On? Here’s What You Need to Know
— From the Experts at Fox Valley Transmission, Oshkosh, WI
There’s nothing quite like that sinking feeling you get when the check engine light suddenly pops on. It’s a small light with a big message: something isn’t right. But how serious is it? Can you keep driving? Or should you pull over immediately? At Fox Valley Transmission, Inc. in Oshkosh, WI, we’re here to break it down—and help you get back on the road with confidence.
What the Check Engine Light Means
The check engine light (CEL) is part of your vehicle’s onboard diagnostics system (OBD-II). When it lights up, your car’s computer is telling you that it has detected a problem—anything from a loose gas cap to a failing sensor or a serious transmission issue.
The key is to pay attention to how the light is behaving:
- Solid Check Engine Light: If the light comes on and stays solid, it usually means the problem is not immediately dangerous but still needs attention. You can typically keep driving, but you should schedule a diagnostic as soon as possible. Ignoring it can lead to reduced fuel economy, performance issues, or further damage.
- Flashing Check Engine Light: If the light is blinking or flashing, pull over immediately and turn off the engine. A flashing CEL usually means a serious misfire or fault that could damage your catalytic converter or engine. It’s not safe to drive in this condition—have your vehicle towed and inspected by a professional right away.
Common Causes of a Check Engine Light
- Loose or faulty gas cap
- Oxygen sensor failure
- Mass airflow sensor problems
- Ignition coil or spark plug issues
- Transmission or drivetrain faults
- Catalytic converter problems
Why Proper Diagnosis Matters
Some shops might clear the code without addressing the real issue—but at Fox Valley Transmission, we don’t just “read the code,” we diagnose the root cause using professional-grade diagnostic equipment and decades of hands-on experience. We’ll walk you through what’s going on, what needs to be fixed, and why—so there are no surprises.
Whether it’s a minor issue or a more serious transmission-related fault, our ASE Certified Technicians have the knowledge and tools to get it fixed right the first time.
If your check engine light is on, don’t ignore it. Call Fox Valley Transmission today at 920-233-9022 or click here to fill out the quick contact form on our Contact Page.
Fox Valley Transmission, Inc. — Serving Oshkosh drivers with honest, expert diagnostics and repairs since 1985. Let us help you drive with confidence.