If your vehicle’s check engine light has come on, you’re probably thinking, “I didn’t need this today!” We understand. But here’s the good news: the check engine light is your vehicle trying to help you — not trying to ruin your day. Understanding the most common causes can help you stay calm and take the right action.
Common Check Engine Light Causes
Minor Issues
- Loose gas cap — one of the most common triggers; tighten or replace your gas cap and the light may clear on its own
- Worn spark plugs — old plugs cause misfires that trigger the CEL
Sensor Problems
- Oxygen sensor failure — affects fuel economy and emissions
- Mass airflow sensor — controls the air-fuel mixture; a failing sensor hurts performance
- EGR valve or PCV valve — part of the emissions and ventilation systems
More Serious Issues
- Catalytic converter failure — an expensive repair if ignored
- Ignition system problems — frayed wiring or aging components
What You Should Do
Don’t ignore the check engine light, even if your car seems to be running normally. Our technicians use diagnostic equipment to retrieve trouble codes and pinpoint the exact cause. Addressing problems early almost always costs less than waiting.
Every repair at JSN Auto Repair is backed by our 36-month/36,000-mile warranty. Bring your vehicle to any of our six Southwest Florida locations and let our ASE-certified technicians take it from there.