---
id: faq-0071
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.castlechevynorth.com"
tags: ["warning-lights", "diagnostics", "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: [diagnostics, troubleshooting]
dealer: Castle Chevrolet North
---

A check engine light signals an issue with your engine, emissions system, or transmission. It might be minor (a loose gas cap) or require attention-so don't ignore it.

If the light is solid (not flashing), it's usually safe to drive carefully to a service center. A flashing light means stop driving immediately; engine damage is likely. Castle Chevrolet North has diagnostic equipment to read your vehicle's error codes and identify the problem. Our technicians will explain what's needed and discuss repair options. Don't delay-call (847) 439-0900 to schedule a diagnostic appointment.