Frequently Asked Questions

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

• Confirm safety first: note any loss of power, rough idle, or new noises and avoid driving if the light is flashing.
• Check the gas cap: a loose or damaged cap is a common, simple cause and can clear the light after tightening.
• Scan for additional dashboard warnings that provide context for the 2025 Kia Carnival issue.
• Record recent fuel, fills, or driving conditions to help technicians diagnose faster.
• If unresolved or the light is flashing, bring the vehicle to Nalley Kia for a certified diagnostic — warranty-covered repairs must be performed at a certified dealership.

How long does a check engine light service take?

• Initial diagnostic typically takes 30–90 minutes depending on symptoms and codes found for the 2025 Kia Carnival.
• Simple fixes (gas cap, sensor replacement) are often completed the same day; more involved repairs can require several hours or a day.
• Nalley Kia’s factory diagnostic tools and trained technicians speed accurate diagnosis and minimize downtime.
• We emphasize immediate and long-term savings by identifying root causes quickly to prevent costly follow-up repairs.
• Schedule online to reduce wait time: https://www.nalleykia.com/service/schedule-appointment.htm

What is the most common reason for check engine light on a 2025 Kia Carnival?

• Loose or damaged gas cap is frequent and simple to correct for the 2025 Kia Carnival.
• Oxygen sensor degradation and EVAP system leaks are common and affect emissions and fuel economy.
• Engine misfires from ignition or fuel delivery issues can trigger the light and may damage the catalytic converter if unchecked.
• Catalytic converter performance faults show up with persistent codes and need prompt attention to avoid higher repair costs.
• Bring your vehicle to Nalley Kia so factory-trained technicians can confirm the exact cause and protect your warranty coverage.

What does it mean when the check engine light comes on in a 2025 Kia Carnival?

• The light indicates the vehicle’s onboard computer has detected a system or emissions fault that needs attention.
• Causes range from minor (gas cap, sensor) to serious (misfire, catalytic converter) and affect emissions, performance, and safety.
• A steady light typically allows cautious driving; a flashing light signals a severe condition requiring immediate service.
• Diagnostics isolate stored trouble codes; Nalley Kia uses OEM-level tools to ensure accurate repair and preserve warranty eligibility.
• Our service approach often costs less than independent shops when you factor immediate fixes, correct repairs, and long-term savings.

How much does a check engine light diagnostic cost for a 2025 Kia Carnival?

• Diagnostic fees vary; a typical scan and initial evaluation at Nalley Kia often falls in a competitive range with transparent estimates provided up front.
• If the issue is covered under factory warranty, required repairs must be completed at a certified dealership for coverage to apply.
• We often deliver lower overall costs than independent shops by avoiding repeat repairs and using genuine parts backed by warranty.
• After diagnosis, you’ll receive a clear repair estimate and options to protect your Carnival’s performance and resale value.
• Check current offers and service specials at https://www.nalleykia.com/specials/service.htm before your visit.