Frequently Asked Questions

What does it mean when the check engine light comes on in a 2020 Ford Explorer?

• It indicates the engine management system has detected an issue — anything from a loose gas cap to an emissions or ignition problem.
• At Larry H. Miller Ford Mesa our certified technicians use factory-grade scanners to read codes and explain the exact cause and the recommended repair plan.
• Choosing our dealership often costs less than independent shops because we combine transparent pricing, OEM parts, and long-term value through correct repairs that protect your vehicle’s lifespan.
• Warranty repairs must be performed at a certified dealership to remain valid; our team documents work and preserves coverage when applicable.
• If you want immediate attention, schedule service or review current service specials to reduce out-of-pocket expense.
• We offer service financing so you can get service now and pay later when unexpected diagnostics or repairs are required.

How long does a check engine light service take?

• Diagnostic time is typically 30–90 minutes depending on complexity; simple code reads and fixes can often be completed the same day.
• If parts or deeper diagnosis are needed, our service advisors will give a clear timeline and cost estimate before work begins.
• Larry H. Miller Ford Mesa emphasizes quick turnarounds with OEM parts and factory-trained technicians, minimizing downtime and protecting long-term value.
• Use our online tool to schedule appointment and select a convenient time — we’ll confirm expected duration when you check in.
• Ask about our service specials and service financing to reduce immediate cost and spread payments if needed.

How much does a check engine light diagnostic cost for a 2020 Ford Explorer?

• Diagnostic prices vary by issue, but our transparent pricing ensures you know the charge up front and understand long-term savings from correct repairs.
• Larry H. Miller Ford Mesa often costs less than independent shops when factoring warranty protection, OEM parts, and technician expertise that prevent repeat work.
• If a simple reset or minor repair is needed, we’ll outline the immediate cost and any recommended preventive work to avoid higher future expenses.
• We provide service financing so you can get necessary repairs now and pay over time, preserving vehicle value and safety.
• To book diagnostics, schedule service and check current service specials that can lower your total invoice.

What is the most common reason for check engine light on a 2020 Ford Explorer?

• The most frequent triggers are an oxygen sensor issue, loose or faulty gas cap, ignition misfires, and catalytic converter concerns — all detected as diagnostic trouble codes.
• Ignoring codes can cause reduced fuel economy, higher emissions, and more expensive repairs down the road; timely dealer diagnosis protects your investment.
• Our technicians provide a prioritized repair plan with OEM parts and documented service that often yields better long-term savings than repeated independent repairs.
• Warrantied repairs must be done at a certified dealership to remain valid; we’ll advise if your vehicle qualifies for coverage.
• Click to schedule service or view our service specials to save on diagnostics and repairs.

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

• Start with simple checks: ensure the gas cap is tight and the fuel filler is sealed — a loose cap is a common trigger and easy to fix.
• If the light stays on or flashes, bring your 2020 Ford Explorer to Larry H. Miller Ford Mesa for a full scan; flashing can indicate a serious misfire requiring immediate attention.
• We provide fast diagnostics, transparent estimates, OEM parts, and service financing so you can address issues now and avoid larger expenses later.
• To get started quickly, schedule service or check our current service specials before you arrive.

2020 Ford Explorer Check Engine Light Codes

On a 2020 Ford Explorer, common diagnostic trouble codes you’ll see in Mesa, AZ include P0171 (system too lean), P0300 (random/multiple misfires), P0420 (catalyst efficiency low), P0455 (evaporative emissions leak), and P0401 (EGR flow insufficient). Each code points to different consequences if ignored: lean conditions lower fuel economy and can lead to catalytic damage; misfires can damage pistons, catalytic converters and cause poor drivability; a failing catalytic converter can cost $1,000–$2,500 to replace if left until catastrophic failure; EVAP leaks often begin as simple hose or cap repairs but can escalate into emissions failures and failed inspections. At Larry H. Miller Ford Mesa our factory-trained technicians diagnose the specific code, explain the repair options, and estimate cost and lifecycle impact. We emphasize transparent estimates, OEM parts and preventative recommendations that save money over time. For convenience, schedule service online, or check our service specials for diagnostic and repair discounts — quality service in Mesa with a focus on long-term savings and vehicle longevity.

2020 Ford Explorer Check Engine Light Reset

Resetting the check engine light on a 2020 Ford Explorer is a simple step after the root cause is fixed, but a reset alone does not address underlying issues. A proper reset should follow verified repairs: our technicians use OEM diagnostic tools to clear codes, perform test drives, and confirm the fault won’t reappear. Choosing Larry H. Miller Ford Mesa for this work means you get factory-trained techs, genuine Ford parts, and documented service that preserves warranty coverage and vehicle resale value. We provide clear service recommendations and the option to finance repairs so you get the work done immediately and pay over time. Our service advisors will show you the code history, explain whether a reset is safe now or if further testing is required, and apply any applicable discounts from our current service specials. For reliable results and transparency, schedule service with us — we prioritize correct repairs that extend the life of your Explorer and help avoid costly repeat visits.

Check Engine Light Flashing

A flashing check engine light on a 2020 Ford Explorer signals an active misfire or another condition that can cause immediate engine damage or overheating of the catalytic converter. If you encounter a flashing light, avoid high-speed driving and heavy loads — come directly to Larry H. Miller Ford Mesa in Mesa, AZ for prompt diagnosis. Our team treats flashing lights as urgent: we prioritize inspections, use OEM diagnostic scanners, and provide same-day estimates when possible. Prompt attention can prevent severe engine harm and larger repair bills. We support customers with transparent pricing, warranty documentation, and service financing so necessary repairs can begin without delay. Check for current offers and discounts via our service specials, and schedule service online now or contact us through Larry H. Miller Ford Mesa — our goal is fast, reliable repairs that protect your safety and the long-term value of your vehicle.