Frequently Asked Questions

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

• Check obvious, simple issues first: a loose or missing gas cap can trigger an EVAP code and is easy to correct.
• Inspect for fuel or oil leaks and listen for unusual engine noises that could indicate a more serious problem.
• Review recent fuel type and fill-ups — the 2026 Toyota GR Supra requires premium unleaded; incorrect fuel can cause faults.
• If you can’t identify a simple cause, bring the vehicle to Nalley Toyota Stonecrest so factory-trained technicians can diagnose with OEM tools.
• Remember: warranty-covered repairs must be performed at a certified dealership to preserve coverage and ensure long-term savings.

How much does a check engine light diagnostic cost for a 2026 Toyota GR Supra?

• Diagnostics typically range from a complimentary scan (during some service specials) to a modest diagnostic fee; final price depends on whether advanced testing is required.
• Nalley Toyota Stonecrest often costs less than independent shops while delivering factory-trained technicians, OEM parts, and documented service history.
• Choosing the dealership delivers immediate savings through accurate diagnosis and prevents unnecessary repairs that inflate long-term costs.
• If a repair is covered by warranty, it must be completed at a certified dealership to ensure the repair is honored and to protect residual value.
• Check our current service specials for diagnostic incentives and transparent pricing at /specials/service.htm.

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

• A check engine light signals the vehicle’s onboard diagnostics have detected an emissions, engine, or powertrain anomaly.
• It can range from minor issues like a sensor fault to more serious problems such as a misfire or turbocharger malfunction on the 3.0L turbo inline-six.
• Codes returned by the computer guide technicians to the root cause; only a full scan and professional diagnosis deliver a reliable fix.
• Bringing the car to Nalley Toyota Stonecrest ensures accurate interpretation, OEM parts, and repairs that maintain warranty and long-term reliability.
• Prompt diagnosis prevents escalation and reduces total ownership costs by avoiding secondary damage like catalytic converter failure.

How long does a check engine light service take?

• Initial computer diagnostics typically take 30–60 minutes to read codes and run basic live-data checks.
• If additional testing or road evaluation is needed, expect a few hours; complex repairs or parts ordering extend the timeline.
• Nalley Toyota Stonecrest prioritizes efficient scheduling and transparent time estimates so you know the expected return time up front.
• Using dealership service streamlines any warranty work, avoids rework, and often yields faster resolution than repeated independent attempts.
• Contact our service team or view availability at /specials/service.htm to book an appointment and minimize downtime.

What is the most common reason for check engine light on a 2026 Toyota GR Supra?

• Common triggers include oxygen sensor faults, EVAP system leaks (often gas cap or purge valve), and occasional misfires tied to ignition or fuel delivery.
• The turbocharged 3.0L inline-six can also set codes related to boost control, intercooler leaks, or charge-air sensors if intake issues arise.
• Ignoring common codes can lead to catalytic converter damage or reduced fuel economy — increasing repair costs dramatically.
• Our dealership’s factory-trained technicians quickly identify the true cause, offer OEM parts, and explain immediate and long-term savings compared to repeated independent work.
• Warranty-covered repairs must be done at a certified dealership to protect your coverage and vehicle value.