"What should I do if my check engine light comes on?"

Don't panic, but don't ignore it either. A steady check engine light means something needs attention soon but isn't critical. A flashing check engine light means pull over when safe—something serious is happening. First step: Check your gas cap. Seriously. A loose cap is one of the most common triggers. Tighten it and drive for a day—sometimes the light clears on its own. If it doesn't, get the code read. Many auto parts stores (AutoZone, O'Reilly) do this free. The code won't tell you exactly what's wrong, but it points you in the right direction. Common culprits: oxygen sensor, catalytic converter, spark plugs, mass airflow sensor. Some are cheap fixes, some aren't. At minimum, get it diagnosed within a week or two.

**When your check engine light comes on:** **Immediate steps:** 1. Check if it's flashing (serious) or steady (less urgent) 2. Flashing = reduce speed, avoid hard acceleration, get to mechanic ASAP 3. Steady = safe to drive short-term, but get checked soon **Quick checks you can do:** - Tighten gas cap (common cause) - Check for any obvious issues (smoke, strange sounds) **Next steps:** - Get code read (free at AutoZone, O'Reilly's) - Common codes indicate: O2 sensor, catalytic converter, spark plugs, mass airflow sensor - Schedule mechanic visit within 1-2 weeks **Don't ignore it** - small issues become expensive problems

Solid light = annoyed. Flashing light = urgent. Know the difference. Steady light? First, check your gas cap is tight (no, really). If that doesn't fix it after a day, go to AutoZone or similar—they'll read the code for free. The code doesn't tell you exactly what's broken, but it narrows it down. Flashing light? Something is actively damaging your engine. Pull over when safe, don't push it. Call a tow or drive very gently to the nearest mechanic. Most common causes: O2 sensor, spark plugs, catalytic converter. Could be $100, could be $1000. Get it checked before it becomes the expensive version.