What do I Do if my Check Engine Light is on?

Posted by NPC on Oct 17th 2023

The sight of the check engine light illuminating on your dashboard can be unsettling. While it might be tempting to ignore it and hope it's just a minor glitch, taking proactive steps is essential. Here are the top three things you should do as soon as that little amber icon catches your eye.

1. Stay Calm and Assess the Situation

Immediate Reaction: Don't panic. The check engine light can come on for various reasons, ranging from minor issues like a loose gas cap to more severe concerns like a malfunctioning sensor.

What to Look For: Pay attention to your vehicle's performance. Are there unusual noises, reduced engine power, or irregular shifting? If the car starts behaving erratically or feels unsafe, pull over to a safe location immediately. Otherwise, note any changes in performance to inform your mechanic later.

2. Check Other Warning Indicators

Immediate Reaction: Sometimes, the check engine light comes on in tandem with other warning signals.

What to Look For: Check for other indicators on your dashboard. A temperature gauge reading high might indicate an overheating issue or a battery light could suggest alternator problems. Such combinations can give you a preliminary idea about the nature of the problem. Remember, though, that a professional diagnostic is essential for a complete understanding.

3. Schedule a Diagnostic Check

Immediate Reaction: While the check engine light is a general warning, modern vehicles have an onboard diagnostic system that logs specific error codes related to the problem.

What to Do: As soon as possible, schedule an appointment with a trusted mechanic or auto service center. They can use specialized equipment to read the error codes from your vehicle's computer, clearly showing the issue. Even if the light turns off on its own, it's still a good idea to get the vehicle checked. The issue might be intermittent, and addressing it early could prevent more significant problems down the line.


The check engine light is your vehicle's way of telling you something isn't right. While it's not always an indication of a catastrophic problem, it's crucial not to ignore it. By staying calm, checking for other signs, and seeking professional diagnostics, you can ensure your vehicle remains in top condition and potentially avoid more extensive and costly repairs in the future.