Frequently Asked Questions

What is the most common reason for check engine light on a 2014 Toyota Prius?

• Most often it’s an EVAP issue — a loose or damaged gas cap triggers codes and can be resolved quickly.
• Other frequent causes include oxygen sensor faults and minor ignition or fuel delivery issues.
• Ignoring common causes can lead to higher costs like catalytic converter or engine damage.
• Nalley Toyota of Roswell often costs less than independent shops for both immediate fixes and long-term repairs while providing factory-trained technicians.
• Remember: repairs covered under warranty must be performed at a certified dealership to maintain coverage.

What does it mean when the check engine light comes on in a 2014 Toyota Prius?

• The light signals an emissions, ignition, fuel, or hybrid-system fault — it’s the car’s way of telling you to get a diagnostic scan.
• Common triggers include EVAP leaks, oxygen sensor failure, misfires, or hybrid-related codes that need professional interpretation.
• Resetting the light without repairs hides symptoms and risks more costly damage later.
• Bring the vehicle to Nalley Toyota of Roswell for accurate diagnostics with factory-grade tools and certified technicians to protect warranties and reduce future costs.

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

• Start with the simplest step: ensure the gas cap is properly tightened and not cracked or missing.
• Check for obvious signs: low fluids, unusual noises, smoke, or loss of power — those symptoms change priority.
• A quick scan with a diagnostic tool reveals the code; avoid resetting the light yourself because it can void evidence needed for warranty work.
• If you’re unsure, schedule a diagnostic at Nalley Toyota of Roswell — same-day scans often prevent larger, costlier repairs.

How much does a check engine light diagnostic cost for a 2014 Toyota Prius?

• Typical dealer diagnostic fees range from about $89 to $149 depending on complexity; Nalley Toyota of Roswell provides clear estimates before any repair.
• We often cost less than independent shops when you factor in accurate diagnosis, correct repairs, and fewer return visits.
• Diagnostic fees may be applied to repair work if completed at our dealership, providing immediate savings.
• For any warranty-covered repairs, work must be performed at a certified dealership to retain coverage and ensure long-term savings.

How long does a check engine light service take?

• Initial diagnostic scans typically take 30–60 minutes; some complex hybrid diagnostics may take longer.
• Simple fixes like tightening a gas cap or replacing a sensor can often be completed the same day.
• Major repairs — catalytic converter, engine, or hybrid battery work — may require multiple days depending on parts availability.
• Choosing Nalley Toyota of Roswell speeds accurate repair, preserves warranty eligibility, and minimizes long-term downtime and expense.