What to Do When Your Check Engine Light Comes On
Did your check engine light just come on? While it may look harmless, that little light can send a wave of panic through even the most seasoned drivers.
It’s easy for your thoughts to spiral out of control when you see that light come on. Is it still possible for you to make it to your destination? Or should you pull over immediately?
However, before you start stressing, you should know that the check engine light doesn’t always mean your engine has failed. In fact, it could be something as simple as a loose gas cap.
In this piece, we’ll break down exactly what to do when that pesky light comes on, helping you figure out if it’s an easy fix or time to call in the pros.
Step 1: Don’t Panic
First thing’s first: stay calm. Seeing that light doesn’t automatically mean your car is about to break down. It could indicate a range of things, from something super minor to something more serious.
However, make sure to also not ignore it. The check engine light is part of your car’s way of telling you that something needs attention, and putting it off could lead to bigger problems down the road.
Step 2: Check for Simple Fixes
Before you rush to the mechanic, try a quick inspection. Some issues are easy to spot and fix, like:
Loose gas cap: One of the most common reasons for the check engine light to turn on is a loose or faulty gas cap. If your gas cap is not sealed tightly, it can trigger the light. Tighten the cap and see if the light goes off after a few miles of driving.
Low oil levels: If your oil is running low or dirty, it could cause engine problems and trigger the light. Check your oil level and top it off if necessary. Make sure to stay on top of oil changes by keeping an eye on the levels.
Worn-out spark plugs: Spark plugs are essential for your engine’s performance. If they’re worn out, they can cause misfires and trigger the check engine light. This may require a quick fix from a professional, but it’s something worth checking.
Step 3: Pay Attention to How Your Car Feels While Driving
Before you get too deep into diagnostics, pay attention to how your car is running. If you notice any unusual sounds, smells, or performance issues (like your car stalling, jerking, or struggling to accelerate), it’s a sign that the issue could be more serious.
In this case, it’s best to get the car checked out sooner rather than later to prevent further damage. Schedule a car inspection right away with trusted auto repair professionals who’d diagnose the problem with your vehicle and provide car repairs.
Step 4: Use an OBD-II Scanner to Get a Code
If you can’t find an obvious issue, don’t worry—there’s a simple tool that can help you out. An OBD-II scanner (On-Board Diagnostics scanner) plugs into your car’s computer system and gives you a diagnostic trouble code (DTC). These codes will point you in the right direction, whether it’s something like a sensor malfunction or a deeper engine issue. You can pick up an OBD-II scanner at an auto parts store or even borrow one for free in some cases.
Once you have the code, you can look it up online or in the scanner’s manual to get a better idea of the problem. Keep in mind, though, that while the code tells you what is wrong, it doesn’t always tell you how serious the issue is. If the code is related to something major (like the catalytic converter), it’s time to get professional help.
Step 5: Head to a Mechanic
If you’ve checked the basics and the light is still on, or if your car is showing signs of serious issues (like poor performance, strange noises, or stalling), it’s time to call in the experts. You don’t want to risk damaging your engine or other key components by driving around with unresolved problems.
A certified mechanic will have the tools and expertise to properly diagnose the issue and get your car back in working order so when required, call them immediately.
Step 6: Don’t Delay Too Long
While some check engine light issues are minor, others can turn into bigger, more expensive problems if left unchecked. If your car seems to be running fine and there are no noticeable performance issues, it might be tempting to just ignore the light. But the sooner you address the issue, the better. Even if it’s something small, fixing it early can save you money and hassle down the road.
Step 7: Reset the Light (When It’s Fixed)
Once you’ve resolved the issue, whether it’s something simple like tightening the gas cap or getting a part replaced, you’ll need to reset the check engine light. Most OBD-II scanners have a reset function, or the light may turn off after a few cycles of driving if the problem is truly fixed.
If the light stays on after repairs, it could indicate that the issue persists, or that another issue has come up so make sure to speak to your mechanic about the issue.
Need Help with Your Check Engine Light?
If that check engine light is causing you stress, don’t wait to find out what’s wrong.
At Cochrane Automotive, we’ve been helping Toronto drivers stay safe on the road since 1972. Led by Ju Chen, a licensed technician with years of experience, we’re here to provide honest, reliable service for your car. Whether it’s a minor issue or something more serious, our team is ready to diagnose and fix the problem with care and expertise.
Book an appointment with us today!