---
id: faq-0086
title: "What should I do if my check engine light comes on?"
category: faq
subtopic: service-and-maintenance
page_type: faq
source_url: "https://www.castlekiamchenry.com"
tags: ["diagnostics", "warning-light", "engine"]
questions:
  - "What does the check engine light mean?"
  - "Is it safe to drive with the check engine light on?"
  - "How do I fix a check engine light?"
related: [warning-lights, diagnostics, maintenance]
dealer: Castle Kia McHenry
---

The check engine light signals an issue with your engine, emissions system, or transmission detected by your vehicle's computer. It could be something minor (a loose gas cap) or more serious, but you should have it diagnosed soon.

If the light is flashing, stop driving-it indicates a severe problem. If it's steady, it's usually safe to drive, but schedule service promptly.

Castle Kia McHenry's Service team uses diagnostic tools to read the code and identify the exact problem. We'll explain what's needed and get you back on the road safely. Call (815) 453-8566 to book a diagnostic appointment.