Frequently Asked Questions

What is the most common reason for check engine light on a 2023 Hyundai Tucson Plug-In Hybrid?

• Loose or damaged gas cap is the single most frequent cause; it’s an easy fix and often resolves the light immediately.
• Faulty oxygen sensors or EVAP system leaks are common and affect emissions and fuel economy if left untreated.
• Misfires from ignition coils, spark plugs, or fuel delivery problems can trigger the light and risk catalytic converter damage.
• Bring your vehicle to Nalley Hyundai so factory-trained technicians can diagnose with OEM tools and protect warranty coverage.

What does it mean when the check engine light comes on in a 2023 Hyundai Tucson Plug-In Hybrid?

• A steady light signals a non-emergency issue that still needs timely diagnosis to avoid progressive damage.
• A flashing light typically means an active misfire — stop driving and have the vehicle checked to prevent catalytic converter failure.
• Codes stored in the onboard computer guide repairs; our dealership reads and interprets them with OEM-level accuracy.
• Warranty-covered diagnostics and repairs must be performed at a certified dealership to maintain coverage and ensure long-term savings.

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

• Confirm the gas cap is tight and undamaged; this simple check often clears evaporative system codes.
• Look for other dashboard alerts or unusual noises and note any changes in performance or fuel economy.
• If the light is flashing or the vehicle runs poorly, stop driving and schedule immediate service with Nalley Hyundai to avoid further damage.
• Our service center uses factory diagnostics so warranty claims and repairs are handled correctly, saving you time and expense long term.

How much does a check engine light diagnostic cost for a 2023 Hyundai Tucson Plug-In Hybrid?

• Typical diagnostic fees at our dealership range from about $69 to $149, depending on the depth of testing required.
• If your vehicle is under warranty, many diagnostics or needed repairs may be covered—warranty work must be completed at a certified dealership to remain valid.
• Nalley Hyundai often costs less than independent shops when you factor in accurate OEM diagnosis, genuine parts, and reduced risk of follow-up repairs.
• We emphasize immediate and long-term savings: correct diagnosis avoids recurring failures, protects resale value, and prevents costly downstream damage.
• Check our Service Specials for current offers: Service Specials.

How long does a check engine light service take?

• A basic scan and initial diagnosis usually take 30–60 minutes; we provide an estimate and next steps when testing is complete.
• Simple repairs like replacing a gas cap or oxygen sensor can often be completed the same day; more complex jobs vary from a few hours to a day or more.
• If parts are required, we use OEM components to ensure fit and longevity; this reduces repeat visits and delivers better long-term value than patch repairs.
• Nalley Hyundai schedules repairs efficiently with factory-trained technicians to minimize downtime and maintain warranty compliance.