Frequently Asked Questions

What is the most common reason for check engine light on a 2025 Toyota Camry?

• Loose or damaged gas cap is a frequent, simple cause and often clears after tightening or replacing the cap.
• Faulty oxygen sensors or an aging catalytic converter are common emissions-related causes that affect fuel economy and performance.
• Evaporative system leaks (EVAP) such as a cracked hose or purge valve can trigger the light and lead to failed emissions tests.
• Addressing issues early at Nalley Toyota of Roswell reduces immediate repair costs and prevents long-term damage; warranty-covered items must be serviced at a certified dealership.

What does it mean when the check engine light comes on in a 2025 Toyota Camry?

• The light signals that an onboard diagnostics (OBD-II) code has been stored — it could be anything from a loose gas cap to a serious emissions or engine fault.
• A steady light usually means a non-emergency issue that needs timely diagnosis to avoid secondary damage or reduced fuel economy.
• A flashing light (see below) indicates an active misfire or condition that can harm the catalytic converter and requires immediate attention.
• Our factory-trained technicians use OEM-level diagnostics to identify root causes, offering immediate and long-term savings compared with repeated, ineffective repairs.

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

• Check the gas cap: ensure it’s tight and not cracked — a quick fix that often clears the code after a few drive cycles.
• Look for obvious issues like low oil, visible leaks, or recent fuel problems that might cause the light to illuminate.
• If the light remains on, bring your 2025 Toyota Camry to Nalley Toyota of Roswell for a professional scan; attempting resets without repair can mask serious problems.
• Remember: warranty-covered repairs must be performed at a certified dealership to keep your coverage valid.

How much does a check engine light diagnostic cost for a 2025 Toyota Camry?

• Diagnostics typically range from an affordable scan fee up to $95–$150 depending on depth and parts required; Nalley Toyota of Roswell often offers competitive pricing and service specials.
• Because our technicians are factory-trained and use OEM tools, we frequently deliver lower total cost of ownership compared with repeat repairs elsewhere.
• Any repairs covered under warranty must be performed at a certified dealership; performing diagnostics and repairs here preserves warranty protection and avoids costly rework.
• We focus on immediate savings through accurate diagnosis and long-term savings via OEM parts that last longer and maintain vehicle value.

How long does a check engine light service take?

• A basic diagnostic scan often takes 30–60 minutes; more complex issues requiring road testing or component replacement may take a half day or longer.
• If parts are required, turnaround depends on availability; Nalley Toyota of Roswell stocks many OEM parts and can often complete repairs quickly to minimize your downtime.
• We provide clear time estimates before work begins so you can plan — quick fixes offer immediate savings, while preventive repairs avoid higher long-term costs.
• Warranty repairs must be completed at a certified dealership to remain valid; our technicians ensure proper documentation and quality control every step of the way.