If your check engine light comes on while you're driving around Essex, MD, it’s easy to ignore — especially if your car seems to be running fine. But that little warning light could be trying to tell you something important.
At J & H Tires, Inc., we’ve diagnosed hundreds of check engine light issues for our neighbors in the Essex area. Here’s what you need to know if yours turns on.
Common Reasons for a Check Engine Light
The check engine light is part of your vehicle’s onboard diagnostics system (OBD-II). It monitors many systems and components and turns on when it detects a problem. Some of the most common causes include:
- Loose or damaged gas cap
Believe it or not, this is one of the most common triggers. A bad seal can cause fuel vapors to leak and set off the light. - Faulty oxygen sensor
This sensor monitors your exhaust and affects fuel economy and emissions. - Worn spark plugs or ignition coils
Misfires can trigger the light and cause performance issues. - Catalytic converter issues
A failing catalytic converter can reduce fuel efficiency and harm the environment. - Mass Airflow Sensor failure
This affects how your engine mixes air and fuel — and can cause rough idling or stalling.
Flashing vs. Solid Check Engine Light
- A solid light means the issue is likely not an emergency but should be diagnosed soon.
- A flashing light means there’s a serious problem (often a misfire) that could damage your engine. Pull over safely and call for service.
What to Do When Your Check Engine Light Comes On
- Check your gas cap – tighten it and see if the light turns off after a few drives.
- Pay attention to how your vehicle is running – rough idle, loss of power, or unusual noises are all clues.
- Don’t ignore it – even if the car seems fine, small issues can become costly repairs if left untreated.
Check Engine Light Diagnostics in Essex, MD
At J & H Tires, Inc., we offer fast and accurate diagnostic services using state-of-the-art scan tools. Whether it’s a minor sensor issue or something more serious, our team will find the root of the problem and recommend honest, affordable repairs.
We proudly serve drivers in Essex, Middle River, Rosedale, and nearby areas. Walk-ins are welcome, but appointments are recommended.
Schedule a Diagnostic Appointment Today
Don’t guess — get answers. Call J & H Tires at (410) 687-1818 or BOOK YOUR APPOINTMENT online to diagnose your check engine light quickly and correctly.