Frequently Asked Questions

What does it mean when the check engine light comes on in a 2017 Hyundai Sonata Plug-in Hybrid?

• It signals that the vehicle's onboard diagnostics detected an emissions, engine, battery, or electrical issue. At Arapahoe Hyundai in CO our technicians perform a complete scan to identify the exact code and cause.
• Common causes include loose gas cap, EV battery charging irregularities, oxygen sensor faults, or ignition system issues. Addressing the code quickly preserves fuel efficiency, avoids further damage, and protects resale value.
• We often cost less than independent shops while delivering factory-trained techs, OEM parts, and transparent estimates — saving you money now and minimizing long-term repair costs.
• If your repair is covered under warranty, it must be completed at a certified dealership to preserve coverage. We also offer service financing so you can get service now and pay later.

How long does a check engine light service take?

• Diagnostics typically take 30–60 minutes; many repairs are completed the same day depending on parts availability and complexity.
• Arapahoe Hyundai prioritizes quick turnaround with OEM parts and certified technicians; we’ll provide a clear time estimate when you arrive or when you schedule service.
• Using our dealership often reduces rework and repeat visits compared with non-certified options, delivering immediate value and long-term reliability.

How much does a check engine light diagnostic cost for a 2017 Hyundai Sonata Plug-in Hybrid?

• Diagnostics are competitively priced; our charges reflect comprehensive testing and diagnosis by factory-trained technicians using OEM tools. Typical diagnostic pricing is competitive and designed to provide full transparency.
• Arapahoe Hyundai frequently offers savings vs. other shops through routine service offers and bundled service specials, while delivering higher confidence in repair longevity and warranty compliance.
• We also offer service financing so you can address issues now and spread payments over time, protecting the vehicle’s performance and avoiding higher costs from delayed repairs.

What is the most common reason for check engine light on a 2017 Hyundai Sonata Plug-in Hybrid?

• One of the most frequent causes is an emissions-related sensor fault (oxygen sensor, EV charging sensor) or a loose/damaged fuel cap. For plug-in hybrids, battery charging or hybrid system sensors are also common culprits.
• Ignoring these warnings risks reduced fuel economy, increased emissions, and potential battery or catalytic damage that costs more to repair over time.
• Bring your vehicle to Arapahoe Hyundai for accurate diagnosis — our certified techs use OEM diagnostics, and warranty-covered repairs must be done at a certified dealership for continued protection.

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

• Safely check for obvious issues: ensure the gas cap is secure and look for obvious electrical problems. For the 2017 Hyundai Sonata Plug-in Hybrid, check hybrid charge indicators and observe vehicle performance.
• Then quickly bring the vehicle in so our technicians can run a full scan to read trouble codes and recommend the correct repair path. You can schedule service online for convenience.
• Using Arapahoe Hyundai ensures transparent pricing, access to service specials, and options like service financing to make repairs manageable while protecting long-term value.