Frequently Asked Questions

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

• Faulty or worn oxygen sensors causing poor fuel economy and emissions failures.
• Loose or damaged gas cap leading to evaporative emissions codes.
• Ignition system issues (spark plugs or coils) that trigger misfire codes and reduce performance.
• Mass airflow sensor or catalytic converter problems that, if left unrepaired, can lead to costly engine or emissions system damage.
• At Nalley Toyota of Roswell we diagnose accurately, often saving customers money upfront versus repeated independent visits while maintaining factory standards.

How long does a check engine light service take?

• Standard diagnostic scans typically take 30–60 minutes for a complete read and initial inspection.
• If further testing or road diagnostics are needed, total service may extend to a few hours — we keep you informed throughout.
• Repairs vary: simple fixes can be same-day; complex parts or warranty-covered items may require scheduling to ensure OEM parts and certified technicians.
• Choosing our dealership often reduces repeat visits and long-term cost by using correct parts and factory procedures the first time.

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

• It signals the vehicle’s onboard diagnostics detected a system out of range — anything from emissions to ignition or fuel delivery.
• A steady light often indicates a non-urgent issue; a flashing light usually signals a severe misfire or condition that can damage the catalytic converter.
• Our technicians provide a clear code readout, explain the cause, and outline immediate and long-term cost implications so you can decide with confidence.
• For warranty-covered repairs, work must be completed at a certified dealership to keep coverage intact.

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 and easy-to-fix cause.
• Review dashboard symptoms — loss of power, stalling or odd noises — which help triage urgency.
• Bring the vehicle to Nalley Toyota of Roswell for a diagnostic scan; we use OEM tools to read codes accurately and recommend the right repair.
• Using our dealership can save you money right away and over time by avoiding misdiagnosis, ensuring proper parts, and preserving warranty coverage.

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

• Diagnostics pricing varies, but our dealership offers competitive rates and periodic service specials; check our Service Specials page for current offers.
• We often cost less than independent shops when factoring accurate diagnosis, OEM parts, and fewer repeat repairs.
• Any repairs covered by warranty must be completed at a certified dealership to maintain coverage — we perform those repairs to factory standards.
• We provide a written estimate before any repair so you understand immediate and long-term savings associated with proper service.