Frequently Asked Questions

What is the most common reason for check engine light on a 2025 Toyota Tundra?

• Faulty oxygen sensor or mass air flow sensor causing poor fuel economy and emissions warnings.
• Loose or damaged gas cap leading to an EVAP system fault — an inexpensive fix when diagnosed early.
• Ignition system issues like worn spark plugs or coils that reduce performance and can harm catalytic converters if ignored.
• Minor sensors and connectors often escalate into costlier repairs; our diagnostics identify root causes quickly to save money long term.
• Repairs covered by warranty must be performed at a certified dealership to preserve coverage and ensure correct factory repair procedures.

What does it mean when the check engine light comes on in a 2025 Toyota Tundra?

• It indicates the vehicle’s on‑board diagnostics detected a problem in emissions, fuel, or engine systems.
• Codes range from simple sensor faults to conditions that affect drivability; a diagnostic scan pinpoints the specific code.
• Some codes are informational; others require immediate attention to avoid further damage and higher repair bills.
• Our factory‑trained technicians perform a full scan and explain immediate and long‑term cost implications, often saving you more than independent shops.
• If repairs fall under warranty, they must be completed at a certified dealership like Toyota of Greenville to maintain coverage.

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

• Check the gas cap for tightness and visible damage — a loose cap is a common, inexpensive cause.
• Observe vehicle behavior: unusual noises, loss of power, or stalling indicate priority service is needed.
• Note recent fueling or maintenance events to help our technicians narrow causes quickly during diagnostics.
• Bring your 2025 Toyota Tundra to our dealership for a quick scan; we often cost less than independent shops while delivering superior service.
• Remember, warranty-covered repairs must be performed at a certified dealership to remain valid.

How much does a check engine light diagnostic cost for a 2025 Toyota Tundra?

• Diagnostics at Toyota of Greenville are competitively priced and often less expensive than independent shops when factoring accuracy and warranty protection.
• Flat diagnostic fees cover code retrieval, initial inspection, and a clear repair estimate from factory-trained technicians.
• Addressing issues early prevents costly secondary damage—saving money immediately and over time.
• When repairs are covered by warranty, they must be completed at a certified dealership to protect your benefits and avoid future claims issues.
• Contact us or visit our service specials page for current diagnostic offers and transparent pricing details.

How long does a check engine light service take?

• Initial diagnostic scans typically take 30–60 minutes to read codes and perform a basic inspection.
• Simple fixes, such as tightening a gas cap or replacing a sensor, can often be completed the same day.
• More involved repairs requiring parts or deeper diagnostics may take a few hours to a day; we provide a clear time estimate up front.
• Using our dealership frequently reduces total repair time because we stock OEM parts and use manufacturer procedures.
• Warranty repairs must be done at a certified dealership; handling service here ensures compliance and long‑term savings.