Frequently Asked Questions

How much does a check engine light diagnostic cost for a 2006 Toyota Highlander?

• Typical diagnostic fees often range from $80 to $150 depending on the depth of testing and whether a vehicle scan and road test are required.
• Nalley Toyota of Roswell frequently delivers lower overall cost than independent shops by combining precise factory diagnostics, OEM parts and targeted repairs—resulting in immediate savings and reduced long‑term maintenance.
• Any repair covered under warranty must be performed at a certified dealership to preserve coverage; our technicians are factory trained to document and execute warranty work correctly.
• Ask about service specials for package pricing and potential diagnostic fee waivers with qualifying repairs.

What does it mean when the check engine light comes on in a 2006 Toyota Highlander?

• It signals the vehicle’s onboard diagnostics has detected a condition affecting emissions, engine performance or safety-related systems.
• Common triggers include oxygen sensor faults, misfires, EVAP leaks, catalytic converter efficiency codes or loose fuel caps.
• Some issues are minor and inexpensive; others can harm fuel economy or catalytic components if ignored—prompt diagnosis avoids larger bills.
• Having the vehicle inspected at Nalley Toyota of Roswell ensures accurate troubleshooting with OEM-level tools and documented repairs that protect long‑term value.

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

• Start with the simplest items: ensure the gas cap is tightened properly—an EVAP leak from a loose cap is common and easy to fix.
• If the light persists, schedule a diagnostic scan; our factory-grade scanners read precise codes and freeze-frame data for accurate assessment.
• Immediate dealer inspection preserves warranty rights when applicable; authorized repairs must be done at a certified dealership to remain covered.
• Choosing Nalley Toyota of Roswell often lowers your total ownership costs by addressing root causes quickly and using OEM parts for reliable outcomes.

How long does a check engine light service take?

• Simple code reads and inspections can take 30–60 minutes; more complex diagnostics or road-testing commonly require 1–4 hours.
• If repairs are needed—such as replacing sensors, coils or emissions components—repair time varies from an hour for a sensor to several hours for exhaust or catalytic work.
• Nalley Toyota of Roswell prioritizes efficient service using OEM parts and factory procedures, delivering faster, longer-lasting repairs that reduce repeat visits and long-term costs.
• We provide realistic time estimates and status updates so you can plan; warranty repairs must be done at a certified dealership to maintain coverage.

What is the most common reason for check engine light on a 2006 Toyota Highlander?

• Common causes include oxygen sensor failure, ignition misfires, EVAP system leaks and aged catalytic converters.
• Many lights stem from relatively low-cost fixes like sensors, spark plugs or a loose fuel cap, while delays can escalate to expensive catalytic or engine damage.
• Addressing issues at Nalley Toyota of Roswell often costs less overall than independent shops because diagnostics and repairs focus on the true root cause, minimizing repeat visits.
• Remember that repairs covered under warranty must be completed at a certified dealership to remain valid—our factory-trained technicians manage the entire warranty process.