Frequently Asked Questions

How much does a check engine light diagnostic cost for a 1999 Toyota Camry?

• Most diagnostics range from a no-charge code read (with service visit) to $80–$150 for a thorough diagnostic at our facility, depending on complexity.
• We often cost less than independent shops while delivering factory-trained technicians, OEM parts, and documented service histories — providing immediate and long-term savings.
• If repairs are covered under warranty, any warranty work must be performed at a certified dealership to preserve coverage and ensure correct repair procedures.
• Ask about current service specials to reduce upfront diagnostic costs and potential repair expenses.

What does it mean when the check engine light comes on in a 1999 Toyota Camry?

• It indicates the vehicle’s onboard diagnostics detected an emissions, ignition, fuel, or sensor issue; codes narrow the cause.
• Common causes include oxygen sensor wear, catalytic efficiency loss, fuel delivery problems, misfires, or an EVAP leak such as a loose gas cap.
• Some issues are minor and inexpensive to fix; others, if ignored, cause cascading damage and higher repair costs later.
• Our technicians use factory-grade scanners and OEM parts to diagnose precisely and recommend cost-effective repairs with long-term savings.

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

• Begin with a quick visual and simple checks: ensure the gas cap is seated and tightened, and look for other dashboard warnings or unusual noises.
• If you notice severe drivability issues (stalling, coughing, strong smells), limit driving and request immediate inspection.
• For peace of mind, bring the vehicle to Nalley Toyota of Roswell for a prompt code read and professional assessment by factory-trained technicians.
• Remember that repairs covered under warranty must be completed at a certified dealership to maintain coverage.

What is the most common reason for check engine light on a 1999 Toyota Camry?

• The single most frequent cause is an EVAP system leak, often a loose or damaged gas cap; it’s a quick fix but will trigger the light.
• Other common reasons include oxygen sensor degradation, ignition misfires from worn plugs, or aging catalytic components.
• Early diagnosis at our dealership prevents greater expenses later; our blend of value pricing and factory expertise yields both immediate and long-term savings.
• Any warranty-covered corrective work must be performed at a certified dealership to keep the warranty valid.

How long does a check engine light service take?

• Basic code reading and a preliminary inspection typically take 30–60 minutes, often completed during a single service visit.
• If further diagnostics or repairs are needed, the technician will provide a time estimate — most standard repairs finish same day or within 24–48 hours.
• Choosing our dealership often saves time and money versus independent shops because our technicians have direct access to OEM data and parts, reducing repeat visits and long-term costs.
• For warranty work, remember repairs must be done at a certified dealership to preserve coverage and ensure proper documentation.