---
id: faq-0068
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.castlehyundaioaklawn.com"
tags: ["maintenance", "warning-light", "diagnostics"]
questions:
  - "Why is my check engine light on?"
  - "What does the check engine light mean?"
  - "Is it safe to drive with the check engine light on?"
related: [diagnostic-service, emissions, vehicle-inspection]
dealer: Castle Hyundai Oak Lawn
---

A check engine light means your vehicle's onboard diagnostics have detected an issue-it could be anything from a loose gas cap to a sensor problem or emission system concern. It's safe to drive carefully to a service center, but don't ignore it; the longer you wait, the more damage could occur. Castle Hyundai Oak Lawn's Service Department has advanced diagnostic equipment to read the code and identify the problem quickly. We'll explain what's happening and recommend the right fix. Don't worry-many check engine issues are simple and affordable to resolve. Call (708) 422-9300 to schedule a diagnostic appointment.