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, simple cause and can trigger the light.
• Scan for stored codes if you have an OBD-II reader; codes point to likely systems but don’t replace a full diagnosis.
• Note symptoms: rough idle, loss of power, or unusual noises — these determine urgency.
• If the light is flashing, stop driving and contact us immediately — flashing often signals an active misfire that can damage the catalytic converter.
• For warranty-covered repairs, remember they must be performed at a certified dealership like Nalley Toyota Stonecrest to preserve coverage.

How long does a check engine light service take?

• Initial diagnostic scan: typically 15–30 minutes to read codes and confirm stored data.
• Standard diagnostic appointments: many issues are diagnosed and quoted within 1–3 hours; complex problems may require extended testing.
• Minor repairs (gas cap, sensor replacement) can often be completed same day; larger repairs vary by part availability.
• We offer factory-trained technicians and a clear timeline; when covered by warranty, repairs must be performed at a certified dealership to maintain coverage.
• Scheduling online or checking our Service Specials can help you get in quickly and reduce downtime: https://www.stonecresttoyota.com/specials/service.htm

What does it mean when the check engine light comes on in a 2023 Toyota Venza?

• It indicates the vehicle’s onboard diagnostics detected an issue in emissions, ignition, fuel, or engine systems.
• Causes range from minor (loose gas cap, sensor drift) to serious (misfires, catalytic converter failure, fuel delivery problems).
• The light alone doesn’t show severity — codes from a diagnostic scan guide the repair plan and estimate.
• Bringing the 2023 Toyota Venza to Nalley Toyota Stonecrest ensures factory-trained technicians, OEM parts, and accurate diagnostics to prevent costly long-term damage.
• For warranty claims, certified-dealer repairs are required to protect both immediate and long-term savings on your vehicle.

What is the most common reason for check engine light on a 2023 Toyota Venza?

• Loose or damaged gas cap is one of the most frequent, inexpensive fixes that can trigger a light.
• Faulty oxygen sensors and ignition misfires are common next causes and can raise fuel costs or harm the catalytic converter if ignored.
• EVAP system leaks (fuel system vapor control) often cause emissions codes and require professional diagnosis.
• Regular maintenance and early dealer diagnostics help avoid escalation into more costly repairs and preserve warranty coverage.

How much does a check engine light diagnostic cost for a 2023 Toyota Venza?

• Typical dealer diagnostic scans commonly range in the $90–$150 area depending on inspection depth and road testing.
• If repairs are needed, we’ll provide an itemized estimate and explain how dealer service often costs less than independent shops over time due to correct diagnosis, OEM parts, and fewer comebacks.
• Immediate savings come from accurate repairs that prevent repeat work; long-term savings include preserving fuel efficiency and avoiding major component failures.
• Warranty-covered diagnostics and repairs must be completed at a certified dealership like Nalley Toyota Stonecrest to keep coverage valid and ensure proper reimbursement and records.