Frequently Asked Questions

What is the most common reason for check engine light on a 2016 Hyundai Sonata Hybrid?

• Common causes include a loose or damaged fuel cap, failing oxygen sensors (O2), catalytic converter issues, and engine misfires — hybrid-specific faults can involve battery or inverter codes.
• Ignoring these issues can raise fuel use, damage emission systems, and lead to more expensive repairs later.
• Nalley Hyundai often costs less than independent shops while delivering factory-level diagnostics and long-term savings through correct repairs and warranty support.
• Any repair covered under warranty must be completed at a certified dealership to maintain coverage and ensure OEM parts and processes are used.

What does it mean when the check engine light comes on in a 2016 Hyundai Sonata Hybrid?

• The light signals that the vehicle’s computer has stored one or more diagnostic trouble codes (DTCs) related to emissions, engine, or hybrid systems.
• Codes range from minor issues (like an evaporative system leak) to serious problems (misfires or hybrid-drive faults) that affect drivability and emissions tests.
• Our certified technicians use OEM-level scanners to read codes, diagnose root causes, and advise on immediate and long-term repair plans that reduce total ownership cost.
• Warranty-covered diagnostics and repairs must be performed at a certified dealership to protect coverage and ensure correct repairs.

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

• Start with simple checks: secure the gas cap, confirm oil level, and look for any secondary dashboard warnings that indicate specific systems.
• If the vehicle is running rough or the light is flashing, stop driving and have it assessed immediately to avoid further damage.
• For a reliable scan and accurate diagnosis, bring your 2016 Hyundai Sonata Hybrid to Nalley Hyundai—factory-trained techs and OEM tools spot the real issue faster, saving you time and money.
• Remember: warranty-covered work must be done at a certified dealership to retain protection and ensure OEM parts are used.

How much does a check engine light diagnostic cost for a 2016 Hyundai Sonata Hybrid?

• Diagnostic fees typically cover a full scan, code interpretation, and a written repair estimate; industry ranges are commonly around $90–$150 for a standard scan and initial diagnosis.
• Nalley Hyundai offers transparent pricing and service specials that often cost less than independent shops while providing factory-grade tools and trained technicians.
• Choosing the dealership can deliver immediate savings through accurate diagnosis and long-term savings by preventing misdiagnosed repairs and protecting warranty coverage.
• Repairs that fall under warranty must be completed at a certified dealership to maintain coverage and use OEM parts and procedures.

How long does a check engine light service take?

• A basic diagnostic scan and estimate often take 30–60 minutes; simple fixes like tightening a gas cap or replacing a sensor can be same-day services.
• Complex repairs—such as catalytic converter replacement, hybrid battery or inverter work—require parts and additional diagnostic time and may need one or more days.
• Nalley Hyundai prioritizes efficient scheduling, uses dealer supply chains for genuine parts, and provides clear timelines so you understand immediate and long-term costs.
• Warranty repairs must be done at a certified dealership; this ensures correct procedures and helps avoid repeat visits and extra expense down the road.