Frequently Asked Questions

What does it mean when the check engine light comes on in a 2019 Hyundai Sonata?

• It indicates that the vehicle's onboard diagnostics (OBD-II) has detected an issue—from simple sensor faults to emissions or engine problems. Our certified Hyundai technicians at Larry H. Miller Hyundai Peoria will diagnose the exact code and explain practical repair options.
• Price transparency: we provide immediate estimates and competitive pricing; our dealership often costs less than many independent shops while delivering factory-trained expertise and OEM parts that protect long-term value and fuel efficiency.
• Warranty note: any repair that qualifies under factory or extended warranty must be performed at a certified dealership to maintain coverage—our team will confirm warranty eligibility before work begins.
• Convenience: if you need to act now, you can schedule service online or review current service specials.
• Financing: we offer service financing so you can get necessary repairs now and pay later, preserving your Sonata's performance and resale value.

How long does a check engine light service take?

• Typical diagnostics for a 2019 Hyundai Sonata take about 30–90 minutes depending on code complexity and whether a road test is needed. Our process is efficient—fast check-in, computerized scan, technician inspection, and a clear repair plan.
• If repairs are required, many common fixes (sensor replacement, simple emissions repairs) are completed the same day. We prioritize quick turnaround without sacrificing quality, using OEM parts and manufacturer-approved methods.
• Immediate and long-term savings: prompt service prevents minor issues from becoming costly repairs, preserving fuel economy and avoiding collateral damage to catalytic converters or engine components.
• To ensure a smooth visit, schedule appointment online and check our service specials before you arrive.
• Service financing is available to make timely repairs more affordable—ask our service advisors about options during check-in.

How much does a check engine light diagnostic cost for a 2019 Hyundai Sonata?

• Diagnostic prices vary, but at Larry H. Miller Hyundai Peoria we offer competitive rates with transparent estimates before any work begins. We often cost less than independent shops while offering factory-trained technicians and OEM parts that protect your vehicle’s longevity.
• Choosing dealership service provides immediate and long-term savings: accurate diagnostics avoid unnecessary parts replacement, and proper repairs reduce repeat visits and preserve warranty coverage when applicable.
• Ask about current service specials that can lower diagnostic or repair costs. We also provide service financing to help you get the work you need now and pay over time.
• For exact pricing, contact our service team or schedule service—we’ll give a firm quote after reading the OBD-II codes and inspecting the vehicle.

What is the most common reason for the check engine light on a 2019 Hyundai Sonata?

• Common causes include a loose or faulty gas cap, oxygen sensor failure, catalytic converter issues, or EVAP system leaks. Many of these are straightforward to diagnose and repair at our Hyundai service center in Peoria.
• Addressing issues early at Larry H. Miller Hyundai Peoria saves money over time—quick fixes prevent escalation into larger failures that reduce efficiency or cause engine damage.
• We use OEM parts and manufacturer procedures, and warranty-covered repairs must be performed at certified dealerships to protect your coverage—our advisors will verify eligibility before work is done.
• To get an accurate diagnosis and estimate, schedule appointment or view our service specials for current offers.
• Service financing is available so you can complete recommended repairs without delay and keep your Sonata reliable.

What is the first thing to check when the check engine light comes on?

• Start with the gas cap: a loose or damaged cap is a common trigger and an easy fix. If the light remains on after tightening, bring your 2019 Hyundai Sonata to our service center for a full scan and inspection.
• Our certified technicians use Hyundai-specific diagnostic tools to read codes and prioritize safety and longevity—ensuring repairs are accurate and cost-effective.
• We emphasize clear pricing, immediate and long-term savings, and the importance of OEM parts. Repairs covered under warranty should be done at a certified dealership to maintain coverage.
• To get the right fix fast, schedule service online and check our service specials. Service financing is available for eligible repairs.