The Dreaded Check Engine Light
You’re driving, and all of a sudden, you notice your “Check Engine” light comes on. What next? Campus Repair is here for you!
What You Need to Know
That “Check Engine” light just came on, or maybe you’re seeing a “Service Engine Soon” warning. You may feel uneasy, but understanding this indicator can help you take the proper steps to keep your vehicle running smoothly. Scroll down to dive into why this light appears and what you should do.
Why does the “Check Engine” Light Turn On?
Your vehicle’s Check Engine Light is part of its onboard diagnostics system (OBDII), which is managed by the Electronic Control Module (ECM). This system continuously monitors engine performance, emissions, and overall efficiency. It adjusts settings based on speed, load, fuel quality, temperature, and road conditions to ensure optimal operation while meeting strict emissions standards.
One of the most significant advantages of this light is its ability to detect minor issues before they become major, costly repairs. While some car problems are easy to notice — such as rough idling, stalling, or trouble starting—others, like decreased fuel efficiency or increased emissions, might not be obvious. That’s why it’s essential not to ignore this warning light when it comes on.
What Should You Do If the Light is On?
The best way to handle a Check Engine or Service Engine Soon light is to have a professional diagnose the issue. At Campus Repair in Fort Collins, Colorado, we use advanced diagnostic tools to retrieve fault codes from your vehicle’s computer.
Sometimes, the fix is as simple as tightening a loose gas cap. Other times, further inspection and testing are needed to determine the root cause. If the issue is covered under your manufacturer’s warranty, we’ll let you know so you can have it repaired at no cost at the dealership.
What About the “Service Engine Soon” Light?
Some vehicles display a “Service Engine Soon” light instead. While it primarily monitors emissions and engine performance, it’s an advisory warning rather than an urgent one. Unlike red warning lights for overheating or charging system failures requiring immediate attention, this light is typically yellow or orange.
Think of it as your vehicle signaling something isn’t right — similar to a smoldering cigarette. Even though your car may still run, it’s not operating at peak efficiency and is likely polluting more than usual. Addressing the issue promptly can prevent further damage and improve performance.
Why Did the Light Turn Off and Then Come Back?
Your car’s OBD system constantly runs self-diagnostic tests to ensure everything functions correctly. When a problem is detected, the system may temporarily compensate. However, if the underlying problem isn’t resolved, the light will likely turn back on.
General Diagnostics
Not all vehicle trouble involves the engine check light. If you notice anything – in the brakes, the suspension, the transmission, the exhaust, etc. we can do a proper diagnosis. Remember: the sooner you diagnose the problem, the less it will cost to fix!
And the safer you and your passengers will be.
Contact Campus Auto Repair for your car diagnostic service today.
