Can I Drive With My Check Engine Light On?
Yes, you can drive with your check engine light on — but that doesn’t mean you should. The light could signal anything from a loose gas cap to a serious engine issue. A professional diagnostic scan can determine if it’s safe to drive or if you need immediate repairs.
You’re cruising through Merrick or stuck on Sunrise Highway and suddenly — bing — the check engine light turns on.
Your first reaction? Maybe panic. Or maybe ignore it.
Either way, you’re not alone — this is one of the most common dashboard warnings drivers see. But what does it really mean, and when should you take it seriously?
Let’s break it down so you can get clarity and peace of mind.
What the Check Engine Light Actually Means
The check engine light (CEL) is your car’s way of saying, “Hey, something’s not quite right.”
It’s tied to the onboard diagnostics system (OBD-II) and can be triggered by dozens of potential issues — some minor, others urgent.
| Common Triggers | Severity |
|---|---|
| Loose or missing gas cap | Low (but reduces fuel efficiency) |
| Failing oxygen sensor | Moderate (affects mileage & emissions) |
| Faulty catalytic converter | High (may lead to engine damage) |
| Misfiring engine | High (requires immediate attention) |
| Faulty MAF sensor | Moderate to High |
| Spark plug or ignition coil issue | High |
| Transmission-related problems | Critical |
Solid vs. Flashing Check Engine Light — What’s the Difference?
Solid Light:
Usually indicates a non-urgent issue. Safe to drive short distances, but should be checked soon.
Flashing Light:
This means immediate danger — potentially engine misfire or unburnt fuel damaging your catalytic converter. Pull over and call a professional.
What You Should Do If the Light Comes On
- Don’t ignore it.
Even if your car “feels fine,” the issue could be hurting your gas mileage, emissions, or damaging your engine over time. - Tighten your gas cap.
Start with the simplest fix. If that was the problem, the light may shut off after a few trips. - Get a diagnostic scan.
A code reader will tell you exactly what the issue is. At Dr. Jack’s, we use advanced diagnostic tools that plug directly into your OBD system. - Schedule service if needed.
If it’s a critical issue, driving further could cause permanent (and expensive) damage.
Free Diagnostics at Dr. Jack’s Auto Repair (Upon Request)
We get it — car trouble is stressful. That’s why we offer:
√ Free Diagnostics Upon Request
Includes:
- Check Engine Light Scans
- Oil Life & Level
- Brake Pad Life
- TPMS (Tire Pressure Monitoring System)
√ NYS Inspection Center
√ Honest, Family-Owned Since 1976
√ Located Right Here in Merrick, NY
You’ll never get pressured into repairs you don’t need — just real answers, from real mechanics who care.
Don’t Let That Light Linger
The longer you drive with the check engine light on, the harder (and costlier) the fix could become.
If your light is on — flashing or not — let us take a look.
Schedule a Free Diagnostic Today
Dr. Jack’s Auto Repair
📍
57 Brooklyn Ave, Merrick, NY
📞
(516) 785-1444
Over 40 Years of Automotive Excellence
For the over 40 years we’ve been in business, we have been striving to provide our clients the best quality service possible to gain their full satisfaction. And they’ve shown their appreciation by coming back to us repeatedly.
We want to be the auto maintenance and repair facility for all your automotive needs.
