---
id: faq-0075
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-lights", "service"]
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: [diagnostic-scan, emissions, engine-repairs]
dealer: Castle Kia McHenry
---

A check engine light signals your onboard computer detected an emissions or engine issue-sometimes minor, sometimes serious. It could be anything from a loose gas cap to a failing oxygen sensor or catalyst problem.

You can usually drive carefully to get to a service center, but don't ignore it. The longer you wait, the more damage may occur and the costlier repairs become. Modern cars store diagnostic trouble codes that tell us exactly what's wrong.

Bring your Kia to Castle Kia McHenry and we'll perform a free diagnostic scan to read the code and explain what needs fixing. Our technicians use genuine OEM parts and know your vehicle inside out. Call (815) 453-8566 to schedule a scan right away-we'll get you back on the road with confidence.