Frequently Asked Questions

How much does a check engine light diagnostic cost for a 2002 Toyota RAV4?

• Diagnostics typically start with an OBD-II scan to read stored codes and identify the subsystem at fault.
• Nalley Toyota of Roswell often provides more competitive pricing than independent shops while delivering factory-level service and genuine parts.
• Immediate savings come from accurate diagnosis and avoiding unnecessary parts; long-term savings result from correct repairs that prevent collateral damage.
• Any repairs covered under warranty must be performed at a certified dealership to keep coverage valid.
• Contact our service team to confirm diagnostic pricing and available service specials: https://www.toyotaofroswell.com/specials/service.htm

What does it mean when the check engine light comes on in a 2002 Toyota RAV4?

• The light indicates the vehicle’s onboard computer has detected a fault in emissions, ignition, fuel, or drivetrain systems.
• Common causes include misfires, oxygen/airflow sensor faults, evaporative system leaks, or catalytic converter inefficiency.
• Some causes are minor; others can reduce fuel economy or cause engine damage if ignored.
• Bringing the vehicle to Nalley Toyota of Roswell ensures factory-trained technicians use OEM tools for precise diagnosis and repair.
• Warranty-covered repairs must be completed at a certified dealership to maintain protection and avoid out-of-pocket escalation.

What is the most common reason for check engine light on a 2002 Toyota RAV4?

• One of the most frequent triggers is an oxygen sensor or catalytic converter-related code, often from an aging sensor or exhaust issue.
• Other typical causes include ignition misfires, evaporative system leaks (loose gas cap), or mass airflow sensor faults.
• Left untreated, small issues can escalate to costly repairs such as catalytic converter replacement or engine damage.
• Our dealership provides expert evaluation and transparent estimates that often cost less than independent shops over time due to accurate diagnosis and lasting repairs.

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

• Start with the basics: ensure the gas cap is secure and the fuel filler is sealed—this simple step can clear evaporative system codes.
• If the light persists, schedule a diagnostic scan so our technicians can read stored trouble codes and assess severity.
• Do not ignore flashing lights; if the light flashes, pull over safely and seek immediate service to avoid engine damage.
• Choosing Nalley Toyota of Roswell gives you factory-trained techs, proper tooling, and warranty-compliant repairs when required.

How long does a check engine light service take?

• Initial scan and code interpretation typically take 20–40 minutes, depending on system complexity and stored data.
• Confirming root cause may require test drives or component checks and can extend the visit to a few hours.
• For many common fixes—sensor replacement or small repairs—service is often completed the same day with an appointment.
• Nalley Toyota of Roswell schedules efficient appointments and uses factory diagnostic tools to minimize downtime and ensure durable repairs that reduce long-term costs.