Frequently Asked Questions

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

• It signals that the vehicle's onboard diagnostics detected an issue — anything from a loose gas cap to an emissions or battery management fault.
• At Larry H. Miller Hyundai Peoria we diagnose the root cause quickly using factory-grade tools and certified technicians to avoid unnecessary repairs.
• Our pricing is competitive — we often cost less than independent shops while delivering OEM parts, warranty protection, and long-term savings through proper repairs.
• If a repair is covered under warranty, it must be completed at a certified dealership to preserve coverage; our team handles that process for you.
• To get started, schedule service and ask about available service specials and service financing options.

How long does a check engine light service take?

• Most diagnostics take less than an hour, though some repairs may require additional time depending on parts and complexity.
• At Larry H. Miller Hyundai Peoria in Peoria, AZ, we prioritize quick turnaround with clear estimates and status updates so you know what to expect.
• We offer loaner options and comfortable waiting amenities; if a repair is needed, our certified technicians use OEM parts to ensure longevity and avoid repeat visits.
• We also provide service financing so you can get service now and pay later — ask our service advisors when you schedule appointment.

How much does a check engine light diagnostic cost for a 2019 Hyundai Sonata Plug-in Hybrid?

• Diagnostic pricing varies by issue, but our transparent pricing and bundled service specials deliver strong value compared with many independent shops.
• Because we use OEM tools and technicians trained on Hyundai systems, you often avoid misdiagnoses and costly follow-ups — delivering immediate and long-term savings.
• When warranty work is involved, having repairs done at a certified dealership preserves coverage and reduces out-of-pocket costs over the vehicle's life.
• Contact our service team or schedule service for a precise diagnostic quote and current offers.

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

• Common causes include sensor faults, emissions components, EV battery management alerts, and occasionally charging system issues specific to plug-in hybrids.
• Our certified technicians at Larry H. Miller Hyundai Peoria identify hybrid-specific codes and recommend cost-effective repairs that protect battery life and fuel efficiency.
• Choosing dealership service often results in lower lifetime ownership costs thanks to proper OEM repairs and warranty-backed parts.

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

• Start with simple checks: ensure the charging plug is secure and the fuel cap is tightened — both can trigger codes.
• If the light remains, avoid prolonged driving and schedule a service so our team can read codes and prevent further damage.
• We can diagnose quickly, advise on immediate steps, and provide options including service financing and any applicable service specials.