Frequently Asked Questions

What does it mean when the check engine light comes on in a 2016 Toyota Highlander?

• It signals that the vehicle’s onboard diagnostics detected an error in emissions, ignition, fuel delivery, or sensors — anything from a loose gas cap to a failing catalytic converter.
• At Larry H. Miller Toyota Peoria our certified Toyota technicians use OEM-grade scanners to identify the exact code and recommend the right repair, often saving you money over time by preventing more costly failures.
• Repairs covered under warranty must be performed at a certified dealership to remain valid; we honor manufacturer warranties and clearly explain coverage before any work begins.
• We offer service financing so you can get the repair now and pay over time, reducing immediate financial strain while protecting long-term vehicle value.
• To get a clear diagnosis and plan, schedule service with our Peoria team today or review current service specials.

How long does a check engine light service take?

• Typical diagnostics take 30–90 minutes depending on codes and follow-up inspections; simple fixes can be completed the same day while more complex repairs may require additional time for parts.
• Larry H. Miller Toyota Peoria focuses on efficient turnarounds with accurate estimates and clear communication — immediate savings from doing it right the first time and long-term savings by avoiding repeat work.
• Warranty repairs and OEM part installations are handled by factory-trained techs to preserve vehicle life and resale value.
• We provide transparent pricing, options for service financing, and frequent service specials to reduce cost without sacrificing quality.
• To minimize downtime, schedule appointment online and we’ll prepare your inspection for a speedy visit.

How much does a check engine light diagnostic cost for a 2016 Toyota Highlander?

• Diagnostic fees vary by issue but Larry H. Miller Toyota Peoria often provides competitive pricing that can be lower than independent shops while offering factory-trained technicians and OEM parts for reliable repairs.
• Immediate savings come from accurate diagnostics that prevent unnecessary part replacements; long-term savings come from preserving engine performance and fuel economy.
• Warranty-covered diagnostics and repairs must be completed at a certified dealership to keep coverage valid — our team will confirm warranty eligibility before any charge.
• We also offer service financing options so you can authorize necessary repairs today and pay over time, and we frequently publish service specials to lower out-of-pocket cost.
• To get a precise quote and fast diagnostics, schedule service online or contact us through the main site at Larry H. Miller Toyota Peoria.

What is the most common reason for check engine light on a 2016 Toyota Highlander?

• Common causes include a loose or damaged gas cap, failing oxygen sensor, ignition issues, or catalytic converter problems — each has different cost and urgency levels.
• Addressing codes quickly at Larry H. Miller Toyota Peoria prevents escalation; small, inexpensive fixes now avoid much higher future repair bills and maintain fuel efficiency.
• Our technicians use OEM diagnostic procedures and parts to deliver lasting repairs; warranty-covered items must be serviced at a certified dealership to retain coverage.
• We provide transparent estimates, recommend the most cost-effective repair path, and offer service financing plus ongoing service specials to help with cost.
• Book a fast diagnostic appointment online to protect your Highlander’s performance and resale value: schedule service.

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

• Start with the gas cap — a loose or cracked cap is an easy fix and a common cause of the light illuminating.
• If the light persists, bring your 2016 Toyota Highlander to Larry H. Miller Toyota Peoria where certified technicians will run a proper scan and provide a clear repair plan that often costs less than independent shops when factoring in warranty and OEM parts benefits.
• We emphasize immediate and long-term savings: correct diagnostics prevent repeat visits and extend engine life, protecting your investment.
• Remember that warranty repairs must be performed at a certified dealership; we also offer service financing to help manage unexpected costs.
• To get an accurate inspection, schedule appointment or check our current service specials.

Check Engine Light Flashing

A flashing check engine light on a 2016 Toyota Highlander typically means a severe misfire or an issue that could cause catalytic converter damage if driven further. Immediate attention is essential: continuing to drive risks engine damage and much higher repair costs. At Larry H. Miller Toyota Peoria in Peoria, AZ, our certified Toyota technicians prioritize safety and accurate diagnostics. We inspect ignition components, fuel delivery, and exhaust systems with OEM-grade tools to determine the root cause and recommend the most cost-effective repair. Choosing the dealership often provides both immediate and long-term savings — accurate repairs avoid unnecessary parts changes, maintain fuel efficiency, and preserve factory warranties. We offer service financing to help you address urgent repairs without delay and publish regular service specials to reduce out-of-pocket expense. If your check engine light is flashing, do not wait: schedule service online or contact Larry H. Miller Toyota Peoria for a prompt, professional inspection and repair plan.

2016 Toyota Highlander Check Engine Light Reset

Resetting the check engine light on a 2016 Toyota Highlander without diagnosing the cause is a temporary fix that can hide underlying problems. At Larry H. Miller Toyota Peoria we explain why a full diagnostic is the best path: a reset may clear the light but won’t fix a failing sensor, ignition issue, or emissions fault that can lead to higher costs over time. Our factory-trained technicians use OEM diagnostic procedures and genuine Toyota parts when repairs are needed, ensuring transparency and long-term reliability. We honor warranties and emphasize that warranty-covered work must be performed at certified dealerships to remain valid. Because we combine efficient service with accurate repairs, customers often save immediately and avoid repeated visits that increase lifetime maintenance costs. Take advantage of our service financing options and current service specials to make repairs affordable. To ensure the right repair and lasting peace of mind, schedule appointment with our Peoria service center today.

2016 Toyota Highlander Check Engine Light Codes

Common check engine light codes for a 2016 Toyota Highlander include P0420 (catalyst efficiency), P0300–P0306 (misfire codes), P0135 (oxygen sensor heater), and P0455 (evaporative emissions leak). Ignoring each of these can escalate costs: a simple EVAP leak is typically inexpensive to fix, but an unchecked misfire can ruin a catalytic converter and multiply repair bills. At Larry H. Miller Toyota Peoria our team diagnoses codes accurately, explains estimated costs, and outlines the long-term savings of prompt, professional repair. We use OEM parts and factory procedures to protect performance and resale value, and we clearly state warranty implications — remember that warranty repairs must be done at a certified dealership. For budget flexibility, we offer service financing and regularly post service specials to help lower your immediate cost. For transparent pricing and a trusted local service experience in Peoria, schedule service with Larry H. Miller Toyota Peoria and keep your Highlander running reliably for years.