Frequently Asked Questions

How much does a check engine light diagnostic cost for a 2026 Toyota Tundra Base?

• Typical diagnostic fees range from about $100–$200 depending on the complexity of the fault and whether live-data troubleshooting or road testing is required.
• At Nalley Toyota Stonecrest we often deliver lower overall costs than independent shops thanks to efficient factory processes and genuine parts, producing immediate and long-term savings.
• Many diagnostics are credited toward repair when performed at our dealership, and warranty-covered repairs must be completed at a certified dealership to remain valid.
• We offer transparent estimates before any repair, so you know expected parts and labor costs up front.

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

• Start with the basics: check the gas cap for tightness and visible damage; a loose or faulty cap commonly triggers emissions-related codes.
• Inspect for obvious fluid leaks, unusual smells, or smoke—these signs may indicate a more serious issue requiring immediate attention.
• If the light persists after a quick check, schedule a diagnostic with our certified technicians who use OEM-grade equipment to read codes and interpret live data.
• Remember: if a repair is covered by warranty it must be performed at a certified dealership to protect your coverage and ensure correct procedures.

What does it mean when the check engine light comes on in a 2026 Toyota Tundra Base?

• The light signals the vehicle’s onboard diagnostics has detected an emissions, ignition, fuel, or sensor-related issue; severity ranges from minor to critical.
• Codes can indicate anything from oxygen sensor faults to catalytic converter inefficiency, misfires, or fuel system faults—only a proper scan reveals the exact cause.
• Addressing codes promptly at our dealership preserves long-term value and can prevent catalytic converter or engine damage, saving money over time.
• Warranty-covered diagnostics and repairs must be performed at a certified dealership to maintain coverage and ensure factory-trained technicians handle the work.

What is the most common reason for check engine light on a 2026 Toyota Tundra Base?

• The most frequent causes are loose or damaged gas caps, faulty oxygen sensors, or ignition misfires; these are often detected as emissions or O2 sensor codes.
• Left unaddressed, sensor or misfire issues can reduce fuel economy and lead to expensive catalytic converter repairs.
• Getting a timely diagnostic at Nalley Toyota Stonecrest often costs less overall than independent shops because we use factory diagnostics and genuine parts for durable repairs.
• Any repair falling under warranty must be done at a certified dealership to keep warranty protection intact.

How long does a check engine light service take?

• Basic diagnostics typically take 30–90 minutes to retrieve codes and perform initial live-data checks; more complex troubleshooting or road testing can extend the time.
• If a repair is required, most common repairs are completed within a day; more extensive repairs may require parts ordering and additional scheduling.
• We schedule service to minimize downtime and offer loaner or shuttle options when available; factory-trained technicians follow OEM procedures for efficient, reliable repairs.
• Warranty repairs must be done at a certified dealership to preserve coverage and often avoid long-term costs associated with improper repairs.