Frequently Asked Questions

What is the most common reason for check engine light on a 2005 Toyota Celica?

• Loose or faulty gas cap leading to an evaporative emissions fault is a frequent cause and an easy fix.
• Oxygen sensor or catalytic converter issues can trigger codes; these affect fuel economy and emissions if unresolved.
• Ignition components such as coils or spark plugs can cause misfires and degrade performance.
• Our technicians diagnose the root cause with factory-grade tools to avoid unnecessary parts replacement.
• Repairs covered under warranty must be performed at a certified dealership to preserve coverage and long-term savings.

How much does a check engine light diagnostic cost for a 2005 Toyota Celica?

• Typical diagnostic fees at our dealership are competitively priced and often lower than independent shops when you factor in accuracy and parts quality.
• We provide upfront estimates; immediate savings come from precise diagnosis that prevents needless repairs.
• Long-term savings include factory parts, proper calibrations, and warranty protection when repairs are performed here.
• Many repairs detected during diagnostics may qualify for service specials; see our service specials for current offers.

What does it mean when the check engine light comes on in a 2005 Toyota Celica?

• It indicates the vehicle’s onboard diagnostics detected a fault—ranging from minor emissions issues to engine or ignition problems.
• A steady light usually means a persistent fault that needs timely diagnosis to avoid progressive damage.
• We use OEM-grade scanners to read stored trouble codes and recommend precise repairs to restore performance and economy.
• Addressing issues at our dealership often costs less overall than independent shops due to accurate fixes and warranty compliance.

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

• Check the gas cap for proper seating—it's a common, simple fix that can clear the light after a drive cycle.
• If the light persists, schedule a diagnostic so our technicians can read stored codes and recommend the correct repair path.
• Do not ignore the light; early diagnosis at a certified dealership protects warranty coverage and avoids costly downstream repairs.
• For immediate assistance, visit our service specials page or contact Nalley Toyota of Roswell to book a diagnostic.

How long does a check engine light service take?

• Basic code read and inspection typically take 30–60 minutes, with a printed report and recommended next steps.
• Repairs vary by issue: simple fixes like a gas cap or sensor replacement can be same-day; complex repairs requiring parts may take longer.
• We prioritize efficient scheduling and transparent timelines to minimize disruption and reduce long-term costs.
• Warranty or covered repairs must be performed at a certified dealership; our factory-trained technicians and parts inventory streamline service time.