Frequently Asked Questions

What does it mean when the check engine light comes on in a 2020 Dodge Durango?

• It’s an alert from your vehicle’s computer that a sensor or system is reporting an issue — anything from a loose gas cap to an emission control or ignition problem.
• At Larry H. Miller Dodge RAM FIAT Tucson our certified technicians connect OEM diagnostic tools that read manufacturer codes and pinpoint battery-related faults, charging issues, or engine faults quickly and accurately.
• We emphasize clear explanations, written estimates, and long-term value — our dealership often costs less than independent shops once you factor in diagnostic accuracy, correct OEM parts, and fewer repeat visits.
• Remember that repairs covered under warranty must be performed at a certified dealership to keep coverage valid; we also offer service financing so you can get service now and pay later.
• To get started, schedule service or check current service specials.

How long does a check engine light service take?

• Typical diagnostics take 30–90 minutes depending on the issue; battery tests and simple resets are often completed the same day.
• If repairs or parts are required, our advisors provide a clear timeline and keep you updated so you can make the best decision for cost and convenience.
• We use OEM parts and factory procedures to ensure reliability and preserve resale value — that translates to immediate and long-term savings.
• Ask about our service financing options at the appointment desk, and schedule appointment online to reserve a convenient drop-off time.

How much does a check engine light diagnostic cost for a 2020 Dodge Durango?

• Diagnostics vary by complexity, but our transparent pricing and written estimates mean you know costs up front.
• Because we detect root causes accurately, customers often save when choosing dealership service versus paying for repeated fixes elsewhere.
• We also run complimentary battery and charging system checks when appropriate, helping you avoid unexpected failures and costly tow bills.
• Find current offers on service specials and schedule service online for a fast appointment.

What is the most common reason for check engine light on a 2020 Dodge Durango?

• Common causes include faulty oxygen sensors, loose or faulty gas caps, ignition misfires, and battery or charging system issues that affect sensor readings.
• Our technicians in Tucson quickly identify whether the root cause is battery-related or a separate engine system, minimizing downtime and repeat visits.
• We recommend prompt diagnostics to prevent catalytic converter damage or degraded fuel economy — timely service yields immediate and long-term savings.
• Book online to schedule service and take advantage of dealership expertise and certified warranty handling.

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

• Start with a battery and charging system check, especially if you notice dim lights or slow starts; electrical issues frequently trigger engine codes.
• If the vehicle starts normally, bring it in for a diagnostic scan — our OEM scanners read Dodge-specific codes and reduce guesswork.
• We provide written estimates and will explain how dealership service and OEM parts often reduce lifecycle costs compared to repeated independent repairs.
• Use our online tools to schedule appointment and view current service specials.