Frequently Asked Questions

What is the most common reason for check engine light on a 2024 Toyota Tundra?

• Loose or damaged gas cap leading to an EVAP system fault—easy to fix but can trigger the light.
• Faulty oxygen (O2) sensors or catalytic converter issues that affect emissions and fuel economy.
• Engine misfires from ignition or fuel delivery issues; left unchecked, they can damage the catalytic converter.
• Minor EVAP leaks or sensor failures; prompt dealership diagnosis prevents escalation and higher repair costs.
• All warranty-covered repairs must be performed at a certified dealership to retain coverage and ensure genuine parts.

What does it mean when the check engine light comes on in a 2024 Toyota Tundra?

• It indicates the vehicle’s onboard diagnostics (OBD-II) detected a fault—ranging from minor emissions issues to serious engine faults.
• A steady light usually signals a non-urgent issue; a flashing light often means a severe misfire needing immediate attention.
• Diagnosis begins with a code read to pinpoint the subsystem (EVAP, ignition, fuel, emissions, sensors).
• Bringing the vehicle to Nalley Toyota of Roswell ensures factory-trained technicians, accurate diagnosis, and warranty protection.
• Using certified dealership service often costs less over time thanks to correct repairs, genuine parts, and documented service history.

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

• Check the gas cap: ensure it’s tightened and not cracked—this simple step fixes many EVAP faults.
• Scan for codes as soon as possible; an OBD-II scan provides direction for the next steps.
• Note drivability symptoms—loss of power, rough idle, odors, or smoke—and report them to the service advisor.
• For flashing lights or severe symptoms, stop driving and have the vehicle inspected immediately to avoid further damage.
• If under warranty, remember repairs must be done at a certified dealership to maintain coverage and use genuine parts.

How much does a check engine light diagnostic cost for a 2024 Toyota Tundra?

• Typical diagnostics range from a basic OBD-II scan to comprehensive inspections; Nalley Toyota of Roswell provides transparent pricing and fast turnaround.
• Dealership diagnostics are performed by factory-trained technicians using OEM tools for accurate results and often yield immediate and long-term savings compared with repeated, incomplete repairs.
• If the repair is covered under warranty, certified dealership service is required to keep coverage valid.
• Check our Service Specials for current offers and potential discounts: /specials/service.htm.
• We’ll outline repair options and costs up front so you can make an informed choice that protects the vehicle’s value and performance.

How long does a check engine light service take?

• Simple diagnostics (code read and minor fixes like tightening a gas cap) can take 30–60 minutes.
• Comprehensive diagnosis, parts ordering, and repairs typically range from a few hours to a day depending on the issue and parts availability.
• If the vehicle needs complex repairs—oxygen sensors, catalytic converter, or internal engine work—timeline extends accordingly; we provide clear estimates up front.
• Using Nalley Toyota of Roswell often reduces repeat visits because factory-trained technicians perform correct repairs the first time.
• Schedule service online for faster check-in: /specials/service.htm or visit our Service Specials to save on diagnostics.