What does it mean when the check engine light comes on in a 2020 Ram 3500?

• It signals your truck's onboard diagnostics detected an issue — anything from a loose gas cap to sensor failures or emissions faults.
• At Larry H. Miller Chrysler Jeep Dodge Ram Boise, our factory-trained technicians diagnose root causes quickly to minimize downtime and prevent expensive follow-up repairs.
• We often cost less than independent shops while providing OEM parts, warranty protection, and documented service history that preserves resale value.
• Service financing is available so you can get repairs now and pay later; to arrange a time, schedule service.
• Remember: warranty-covered repairs must be performed at a certified dealership to keep protections intact.

How long does a check engine light service take?

• Most diagnostics are completed the same day — typically 30 minutes to 2 hours depending on the issue and parts availability.
• If further repairs are required, we provide a clear estimate and timeline so you can decide with confidence.
• Choosing Larry H. Miller Chrysler Jeep Dodge Ram Boise gives you faster turnarounds thanks to OEM parts access and skilled technicians focused on Ram trucks.
• Take advantage of our current service specials for savings and to reduce long-term ownership costs.
• To book, schedule appointment online in minutes.

How much does a check engine light diagnostic cost for a 2020 Ram 3500?

• Diagnostics vary by issue, but our dealership pricing is competitive — we frequently cost less than independent shops while offering factory expertise and warranty-backed parts.
• Investing in a proper diagnosis saves you money over time by catching problems early and avoiding cascading failures that increase repair bills.
• We accept service financing so you can address urgent repairs now and pay over time, preserving vehicle health and value.
• Ask about current service specials to lower out-of-pocket costs and extend savings on routine maintenance.

What is the most common reason for check engine light on a 2020 Ram 3500?

• Common causes include sensor failures (O2, MAF), EVAP leaks, or ignition issues; for diesel-market trucks, turbocharger or emission control faults are also possible.
• Our technicians in Boise use OEM-grade scanners to identify exact codes and recommend the best course of action for longevity and fuel economy.
• Choosing dealership service provides documented repairs, OEM parts, and warranty continuity that protect you and your truck's performance.

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

• Start with safe basics: ensure the gas cap is secure. If the light remains, professional scanning is the next step.
• Bring your 2020 Ram 3500 to Larry H. Miller Chrysler Jeep Dodge Ram Boise for a fast diagnostic; our team translates codes into clear repair plans and long-term savings.
• To get started right away, schedule service or view current service specials.

2020 Ram 3500 Check Engine Light Codes

The most frequent diagnostic codes for a 2020 Ram 3500 seen at Larry H. Miller Chrysler Jeep Dodge Ram Boise often relate to oxygen sensors, mass air flow sensors, and EVAP system leaks. Left unaddressed, an O2 sensor fault can reduce fuel economy and damage the catalytic converter — a much more expensive repair. A faulty MAF sensor typically causes rough idle and reduced power, impacting towing capability and increasing fuel costs. EVAP leaks may result in failed emissions tests and progressive drivability concerns. Our Boise service center prioritizes transparent estimates and explains both immediate repair costs and long-term savings from timely intervention. We use OEM parts and calibrated diagnostic tools so fixes are precise and durable. For owners who tow or use their 2020 Ram 3500 for work, the difference between a quick diagnostic and delayed service can mean thousands in avoided component replacements. To secure an appointment with certified technicians and to take advantage of financing options, schedule service today and check our service specials for additional value.

2020 Ram 3500 Check Engine Light Reset

Resetting the check engine light without correcting the underlying fault only masks symptoms and risks further damage. At Larry H. Miller Chrysler Jeep Dodge Ram Boise, we recommend a full diagnostic rather than a simple reset, because factory scans identify pending faults and freeze-frame data that guide proper repairs. Our team explains why dealership service delivers better outcomes: OEM parts, certified technicians, and documented repairs that protect warranties and resale value. If a repair is required, we provide transparent pricing and show how fixing the root cause yields immediate savings in fuel and long-term reductions in repair frequency. We also offer service financing to help customers address necessary work right away. If you’re considering a quick reset yourself, consider the value of a professional inspection — it saves time, prevents repeat visits, and keeps your truck running at peak performance. Book online to get a full diagnostic and honest guidance: schedule appointment, and view current service specials.

Check Engine Light Flashing

A flashing check engine light on a 2020 Ram 3500 typically indicates a severe misfire or an issue that can damage the catalytic converter — you should stop driving and have the truck inspected immediately. At Larry H. Miller Chrysler Jeep Dodge Ram Boise, our priority is safety and rapid diagnosis. We fast-track flashing-light cases to reduce risk of further component damage and to restore reliable operation for towing or heavy-duty use. Technicians isolate ignition, fuel, and sensor faults with OEM equipment and present clear repair options, including cost and timeline. Take advantage of our promotional offers and certified service environment; our parts warranty and service financing help spread costs while protecting long-term value. Don’t wait — contact our team or schedule service online now to get prioritized attention and professional care for your 2020 Ram 3500.