Frequently Asked Questions

What is the first thing to check when the check engine light comes on in a 2025 Toyota Prius?

• Check the gas cap: a loose or damaged cap is a common cause and can trigger the light.
• Look for dashboard messages or reduced-power warnings; they indicate severity.
• If the light is flashing, stop driving and have the vehicle inspected immediately to avoid engine or catalytic converter damage.
• Bring your Prius to Nalley Toyota of Roswell so factory-trained technicians can run a full hybrid-capable diagnostic and protect any warranty coverage.
• Using our dealership often costs less than independent shops because we combine accurate diagnostics, OEM parts and long-term savings from proper repairs.

How long does a check engine light service take?

• Initial scan and code read: typically 30–60 minutes with our hybrid-capable OBD-II tools.
• Simple fixes (e.g., tightening a gas cap or clearing a transient code): often completed the same day.
• Repairs vary: sensor replacements or minor repairs may take a few hours; complex repairs can take one or more days depending on parts availability.
• Our dealership’s factory-trained technicians and direct parts supply speed accurate diagnosis, providing immediate and long-term savings versus repeated independent attempts.
• Warranty-covered repairs must be performed at a certified dealership to remain valid; we’ll advise on timing when you arrive.

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

• It signals the vehicle’s computer detected a fault—anything from emissions system issues to sensor faults or hybrid-system alerts.
• Common causes include an evap leak (loose gas cap), oxygen sensor faults, catalytic converter efficiency, or hybrid-related codes.
• Some issues are minor; others can affect fuel economy, emissions, or safety if not addressed.
• Bring the vehicle to Nalley Toyota of Roswell for a full scan so our technicians can pinpoint the cause and protect warranty eligibility.

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

• Diagnostics at our dealership typically start with a comprehensive scan fee in line with local market rates; exact price depends on inspection depth and required hybrid diagnostics.
• We often cost less than independent shops because accurate diagnosis and OEM parts reduce repeat visits—delivering immediate and long-term savings.
• If a repair is covered under warranty, the repair must be performed at a certified dealership to remain valid.
• Ask about current service specials and diagnostic packages at Nalley Toyota of Roswell to maximize value and reduce out-of-pocket cost.

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

• Evaporative emissions leaks—often a loose or faulty gas cap—are one of the most frequent triggers.
• Oxygen sensor or catalytic converter efficiency issues are common and, if ignored, increase repair costs and reduce MPG.
• Hybrid system or battery-related codes can appear; our dealership has the specialized tools and technicians to diagnose hybrid-specific faults.
• Correct diagnosis and timely repair at a certified dealer often saves money over time by preventing secondary damage and preserving warranty coverage.