There’s nothing more frustrating than driving along and suddenly seeing your check engine light flicker on. You’re left wondering what caused it, how serious it is, and how much it will cost to fix. But before you panic, know this little light isn’t meant to scare or confuse you. It’s designed to help you keep your vehicle running smoothly and prevent more significant problems. Here’s everything you need to know about auto diagnostics and what to do next.
In the past, only professional mechanics had access to auto diagnostics. But since the 1990s, most vehicles have been equipped with an onboard diagnostics system known as OBD or OBD-II. This system monitors the vehicle’s engine performance and alerts you with a check engine light if there’s a potential issue. These alerts are triggered by sensors strategically placed throughout the vehicle that monitor exhaust emissions, fuel delivery, and throttle position.
So what happens when the check engine light comes on? The first step is to stay calm and safely pull over. Don’t ignore the light; it can signify something more serious than you think. Once you have come to a stop, check on the dashboard to see if any of the other dashboard lights are on. If it is just the check engine light, it indicates that there may not be an immediate issue, but you still should take action.
The next course of action is to get your vehicle to an auto repair shop. In some cases, your local auto parts store may also be able to scan the system for you, as they do carry OBD scanners for rent at an affordable rate. Once connected to the OBD system, the scanner readout will provide a numeric code(s) indicating the issue that triggered the check engine light. These codes point to a specific fault in the vehicle and help mechanics determine how to fix it.
Remember that the check engine light does not always mean there’s a dire problem with your vehicle. Some common issues include loose gas caps, which can trigger the light, or minor leaks in the system. However, issues may be more significant at other times, like catalytic converter failure or issues with the oxygen sensor. If you’re unsure if the cause is severe, contact a professional auto technician.
Driving a vehicle is an investment in your safety and convenience. Understanding your vehicle goes well beyond just knowing its quirks and features. Knowing how to react when there is an issue with your vehicle is vital for safety and can save you significant costs in the long run. Whenever the warning light blinks on your dashboard, take it seriously and get your vehicle checked out by a professional auto technician. Never ignore the check engine light and take proper action as soon as possible. It could save you a lot of frustration and money.
