What does it mean when the check engine light comes on in a 2020 Toyota Highlander Hybrid?

• It signals the vehicle’s diagnostic system has stored a fault code. Codes range from minor emissions or sensor issues to more serious engine or hybrid system faults.
• At Larry H. Miller Toyota Peoria, our factory-trained technicians read the code, explain findings in plain language, and recommend OEM parts and repairs that protect long-term value and fuel efficiency.
• Choosing our dealership often costs less than independent shops when factoring immediate diagnostics, correct repairs, OEM parts, and long-term savings from prevented failures.
• Repairs covered under warranty must be performed at a certified dealership to maintain coverage and ensure OEM warranty compliance.
• Ready to act? You can schedule service online and ask about service financing to get repairs done now and pay later.

How long does a check engine light service take?

• Diagnostics typically take 30–90 minutes depending on code complexity and whether test drives or additional inspections are needed.
• If a simple sensor or battery issue is found, many repairs are completed the same day; more involved hybrid or engine repairs are scheduled with clear timelines and loaner options when available.
• Our service team in Peoria, AZ focuses on speed and accuracy — quick turnarounds preserve vehicle uptime and reduce long-term costs by addressing issues early.
• To book a convenient time, schedule service or review current service specials before your visit.

How much does a check engine light diagnostic cost for a 2020 Toyota Highlander Hybrid?

• Diagnostic pricing varies, but our transparent estimates and packaged offers often deliver better value than independent options because we combine factory expertise with efficient repair paths.
• We emphasize immediate and long-term savings — correct OEM repairs prevent repeated visits and protect resale value for your Highlander Hybrid.
• Ask our service advisors about current service specials and financing options to make repairs manageable today.
• Remember: warranty-covered repairs must be completed at a certified dealership to remain valid.

What is the most common reason for check engine light on a 2020 Toyota Highlander Hybrid?

• Common causes include loose gas cap, oxygen sensor faults, catalytic converter concerns, or hybrid system sensor alerts.
• Our technicians in Peoria use OEM diagnostic procedures to pinpoint the cause and advise on the most cost-effective, long-term solution.
• We often save customers money by diagnosing correctly the first time and recommending only necessary OEM parts and services.
• To protect your warranty and get skilled attention, schedule appointment with Larry H. Miller Toyota Peoria.

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

• Start with the basics: secure the gas cap and check for obvious issues. If the light remains, have a technician scan the vehicle for stored codes.
• At our Peoria dealership, we provide clear diagnostics, explain recommended repairs, and show how dealership service often provides better immediate and long-term value than ad-hoc fixes.
• We offer service financing, OEM parts, and certified technicians — and any warranty repairs must be completed at certified dealerships to ensure coverage.
• To get a prompt inspection, schedule service and check our service specials for savings.