Frequently Asked Questions

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

• Check the gas cap for tightness and visible damage — a loose or cracked cap is a common trigger for the light.
• Look for obvious fluid leaks, unplugged hoses, or low engine oil and coolant levels before driving further.
• Note any new sounds, loss of power, or unusual exhaust smell; these details help our technicians diagnose faster.
• If the vehicle is under warranty, remember warranty repairs must be performed at a certified dealership to maintain coverage.
• When in doubt, bring your 2021 Hyundai Sonata Hybrid to Courtesy Hyundai of Tampa for a prompt, factory-grade scan.

How much does a check engine light diagnostic cost for a 2021 Hyundai Sonata Hybrid?

• Initial scan diagnostics at our dealership typically range from a modest fee to a competitive flat rate; exact pricing varies by service required.
• Many issues only need an ECU scan and take under an hour; those scans are affordable and can prevent costly downstream repairs.
• If repairs are needed, we often cost less than independent shops due to factory parts sourcing and efficient labor processes, delivering immediate and long-term savings.
• Warranty-related repairs must be completed at a certified dealership to remain valid — our factory-trained technicians handle these services precisely.
• Get a transparent estimate by scheduling online at our Service Scheduler: https://www.tampahyundai.com/service/schedule-appointment.htm

What does it mean when the check engine light comes on in a 2021 Hyundai Sonata Hybrid?

• The light signals that the vehicle’s onboard diagnostics detected an emissions, performance, or sensor fault — severity ranges from minor to urgent.
• Causes include EVAP leaks, oxygen sensor faults, catalytic converter issues, misfires, or hybrid-system alerts specific to the Sonata Hybrid.
• Some issues are simple and inexpensive; others can escalate into expensive repairs if ignored, increasing fuel use or damaging components.
• We recommend a professional scan at our dealership so factory-trained technicians can identify codes and recommend cost-effective repairs with genuine parts.
• Visit our service specials to learn about current savings: https://www.tampahyundai.com/specials/service.htm

How long does a check engine light service take?

• Initial code scanning and inspection commonly take 30–60 minutes, letting us identify whether a simple reset or deeper repair is needed.
• Minor repairs—like replacing a gas cap, oxygen sensor, or basic hose—can often be completed the same day.
• More involved repairs, such as catalytic converter work or hybrid-system diagnostics, may require several hours or a return visit for parts and testing.
• At Courtesy Hyundai of Tampa we use factory diagnostic tools and trained technicians to minimize downtime and provide accurate timelines.
• Schedule a convenient appointment online to reduce wait times: https://www.tampahyundai.com/service/schedule-appointment.htm