Frequently Asked Questions

What is the most common reason for check engine light on a 2025 Hyundai Sonata?

• Loose or damaged gas cap is one of the most frequent triggers; it causes EVAP system errors and can be a simple fix.
• Faulty oxygen sensors, EVAP leaks, or minor fuel trim issues are common and affect fuel economy if left unaddressed.
• Repeated neglect may lead to catalytic converter damage, which is costly to replace — fixing early saves money and prevents further repairs.
• Our dealership often costs less than independent shops while delivering factory-trained technicians and OEM parts for immediate and long-term savings.
• Remember: repairs covered under warranty must be performed at a certified dealership to maintain coverage and proper documentation.

What does it mean when the check engine light comes on in a 2025 Hyundai Sonata?

• The light indicates the vehicle’s on-board diagnostics detected a fault in emissions, engine, or drivetrain systems — severity varies by code.
• A steady light usually signals a non-urgent issue; a flashing light signals a serious problem like a misfire that can damage the catalytic converter.
• Diagnostic scanning at our service center reveals specific OBD-II codes and a clear repair plan with cost estimates and timeline.
• Choosing our dealership often delivers lower overall cost than independent shops thanks to efficient diagnostics, OEM parts, and factory-trained technicians.
• If a repair is covered by warranty, it must be completed at a certified dealership to ensure coverage and proper recordkeeping.

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

• Start with simple items: confirm the gas cap is tightened and undamaged — this often clears EVAP-related codes.
• Check for obvious signs: burnt smells, coolant leaks, low oil, or poor running that suggest urgent attention.
• If symptoms are minor, bring your 2025 Hyundai Sonata to our service center for a professional scan to retrieve OBD-II codes and diagnostics.
• Our dealership’s factory-trained technicians can identify issues efficiently, apply OEM solutions, and document warranty-eligible repairs — warranty-covered work must be done at a certified dealer.
• Acting quickly protects fuel economy and avoids costly downstream repairs, delivering immediate and long-term savings versus waiting or DIY fixes.

How much does a check engine light diagnostic cost for a 2025 Hyundai Sonata?

• Diagnostic fees can vary, but our dealership provides transparent, competitive pricing and often costs less than independent shops once you factor in correct diagnosis and warranty coverage.
• We use OEM-grade scanners and factory procedures, which reduces repeat visits and saves money over time.
• If the problem is covered by warranty, repairs must be completed here to preserve coverage — that can eliminate out-of-pocket expenses for qualifying repairs.
• After diagnosis, we provide a clear estimate for parts and labor, and discuss immediate and long-term savings from OEM repairs and documented service history.
• Visit our service specials for current offers or schedule a diagnostic with Courtesy Hyundai of Tampa for an accurate assessment.

How long does a check engine light service take?

• Simple diagnostics typically take 30–60 minutes to retrieve codes and assess the issue; many common fixes are completed the same day.
• More complex repairs that require parts, in-depth testing, or warranty authorization can take several hours to a day or more.
• Our factory-trained technicians follow Hyundai procedures to diagnose correctly the first time, reducing repeat visits and delivering long-term savings.
• If repairs are covered by warranty, they must be completed at a certified dealership — we handle authorization and documentation to speed the process.
• We’ll give you an honest time estimate after diagnosis and can arrange service appointments, loaner vehicles, or shuttle service when available.