Frequently Asked Questions

What is the most common reason for check engine light on a 2024 Hyundai Santa Fe?

• Common causes include misfires, failing oxygen sensors, catalytic converter inefficiency (codes like P0420), and evaporative emissions leaks (e.g., loose or damaged gas cap, P0455).
• Ignoring these codes can lead to reduced fuel economy, failed emissions tests, and progressive component damage that increases repair costs over time.
• Nalley Hyundai's factory-trained technicians diagnose the root cause, helping you realize immediate and long-term savings versus repeated visits to independent shops.
• Repairs covered under warranty must be performed at a certified dealership to remain valid—our service team handles warranty repairs with genuine parts and documented service.

What does it mean when the check engine light comes on in a 2024 Hyundai Santa Fe?

• The light signals the vehicle’s onboard diagnostics detected a fault in emissions, engine, or related systems; codes stored in the ECU point technicians to the system at fault.
• Some issues are minor (loose gas cap), while others can affect drivability and emissions (misfires, sensor failures, catalytic converter problems).
• At Nalley Hyundai in GA we read and interpret the codes, communicate repair options, and explain immediate and long-term cost implications so you can make informed decisions.
• Remember: any repair or warranty work should be completed at a certified dealership to ensure coverage and proper parts installation.

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

• Start with the basics: check that the gas cap is tightened. An EVAP leak from a loose cap is a common, low-cost fix that often turns the light off after a few drive cycles.
• If the light persists, schedule a diagnostic so we can pull stored codes and identify the exact subsystem affected—this avoids unnecessary part replacement and provides immediate savings.
• Nalley Hyundai uses factory-grade diagnostic tools so repairs and any warranty work are correctly documented and performed by certified technicians.

How much does a check engine light diagnostic cost for a 2024 Hyundai Santa Fe?

• Diagnostics prices vary, but Nalley Hyundai often costs less than independent shops while offering a higher level of service and factory-trained technicians.
• We provide an itemized estimate after reading codes and confirming the fault so you know immediate repair costs and potential long-term savings from fixing issues early.
• If a repair is covered under warranty, the diagnostic and repair must be performed at a certified dealership to preserve coverage; our team will guide you through warranty validation.

How long does a check engine light service take?

• Simple diagnostics and minor fixes (gas cap, clearing codes) can take under an hour; more complex repairs like catalytic converter or ignition repairs require additional time for disassembly and parts.
• Typical diagnostic appointments at Nalley Hyundai are scheduled to minimize wait time—our factory-trained technicians work to complete correct repairs the first time, saving you time and expense overall.
• We’ll provide an estimated completion time when we present the diagnosis and will only proceed with your approval; warranty-covered repairs must be performed here to maintain coverage.