Frequently Asked Questions

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

• Check the gas cap: a loose or damaged cap is a common cause and cost-free to inspect.
• Look for obvious issues: oil level, coolant level, or a disconnected hose can trigger codes.
• Note vehicle behavior: rough idle, stalling, or reduced power help prioritize diagnosis.
• Bring it to Nalley Toyota of Roswell for a technician-run scan; dealership diagnostics often save you money immediately and over time by preventing unnecessary repairs.
• Remember: warranty-covered repairs must be performed at a certified dealership to preserve coverage.

What does it mean when the check engine light comes on in a 1997 Toyota Celica?

• It indicates the vehicle's onboard diagnostic system has detected an emissions or engine performance issue.
• Issues range from minor (evap system leak) to serious (engine misfire or catalytic converter damage).
• A scan reveals trouble codes that guide repairs; quick diagnosis reduces repair costs and protects fuel economy.
• Repairs done at our dealership use OEM parts and factory-trained technicians, which often costs less than independent shops and ensures long-term savings.
• Any warranty-covered work must be completed at a certified dealership to remain eligible for coverage.

How much does a check engine light diagnostic cost for a 1997 Toyota Celica?

• Diagnostic fees vary by complexity, but most dealer diagnostics are competitively priced and transparent.
• Typical scans start with a standard code read; additional testing is quoted before work begins.
• Nalley Toyota of Roswell frequently costs less than independent shops when you factor in correct repairs, OEM parts, and warranty protection.
• Correct diagnosis prevents repeat visits and expensive downstream repairs, delivering immediate and long-term savings.
• Remember: any repairs covered by warranty must be performed at a certified dealership to retain coverage.

How long does a check engine light service take?

• Simple code reads can be completed in 30–60 minutes; more involved diagnostics or repairs require additional time.
• Estimated repair times are provided after the initial scan so you know expected return time and cost.
• Our factory-trained technicians work efficiently with dealer tools, often reducing total shop time compared to independent shops.
• When covered by warranty, repairs must be performed at a certified dealership to preserve benefits and avoid delays later.
• We offer service specials and transparent scheduling — check our service page to book an appointment.

What is the most common reason for check engine light on a 1997 Toyota Celica?

• Common causes include a loose or faulty gas cap, oxygen sensor failures, and evaporative emissions leaks.
• Other frequent issues are ignition misfires and aging oxygen sensors that affect fuel economy and emissions.
• Timely dealer diagnosis prevents escalation to costly parts like catalytic converters and saves on fuel and repairs.
• Nalley Toyota of Roswell uses OEM parts and factory-trained techs to ensure repairs are correct the first time, which often results in lower total ownership cost than independent shops.
• If a repair is covered by warranty, it must be completed at a certified dealership to maintain coverage.