Frequently Asked Questions

What does it mean when the check engine light comes on in a 2019 Ram 3500?

• It signals a detected fault in engine, emissions, or drivetrain systems — from loose gas caps to oxygen sensor or catalytic converter issues.
• At Larry H. Miller Chrysler Dodge Ram FIAT Denver our certified technicians use OEM-calibrated scanners to identify codes quickly and accurately, helping you avoid costly damage.
• Choosing our dealership often costs less than independent shops when you factor in immediate diagnostics, correct repairs, and long-term savings from proper fixes and warranty coverage.
• We offer service financing to help you get necessary repairs now and pay later; to arrange repairs, please schedule service.
• Check our current offers on service specials for discounts on diagnostics and repairs.

How long does a check engine light service take?

• Basic diagnostics for a 2019 Ram 3500 typically take 30–90 minutes depending on code complexity and testing required.
• If parts or in-depth troubleshooting are needed, total time may increase; we communicate timelines up front so you can plan accordingly.
• Our Denver service team focuses on efficient turnarounds using OEM parts and factory procedures to minimize repeat visits and boost vehicle longevity.
• To get an accurate appointment window, schedule service online and view available slots.
• Ask about our service specials to reduce costs and maximize long-term value.

How much does a check engine light diagnostic cost for a 2019 Ram 3500?

• Diagnostic fees vary by the issue, but our dealership provides transparent pricing and value—often costing less than independent shops when you include accurate diagnosis, OEM parts, and warranty-backed repairs.
• We emphasize immediate and long-term savings: correct diagnosis prevents wasted parts, repeated labor, and future failures.
• Repairs covered under warranty must be performed at a certified dealership to protect your coverage; our team will explain warranty terms clearly.
• We also offer service financing so you can get necessary work done now and pay over time; to book, schedule service.
• Check current offers on our service specials page before you arrive.

What is the most common reason for check engine light on a 2019 Ram 3500?

• Common causes include faulty oxygen sensors, loose gas caps, failing catalytic converters, or issues with ignition systems and sensors.
• Ignoring these codes can reduce fuel economy, increase emissions, and lead to expensive repairs — our Denver technicians diagnose and correct root causes to protect your truck.
• We use factory-grade tools and OEM parts to ensure repairs last and maintain resale value and warranty integrity.
• To minimize downtime and cost, schedule service and review available service specials.

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

• Start with the basics: ensure the gas cap is tight. A loose or damaged cap commonly triggers a code.
• If the light remains, bring the 2019 Ram 3500 to Larry H. Miller Chrysler Dodge Ram FIAT Denver for a fast scan — our certified techs will read codes and recommend prioritized repairs.
• We provide clear estimates, explain immediate and long-term savings, and honor warranties that protect you over time.
• To get an accurate diagnosis and prompt service, schedule service and check our current service specials.

Check Engine Light Flashing

The check engine light flashing on your 2019 Ram 3500 signals an active misfire or condition that could cause immediate engine or emissions damage. Ignoring a flashing light risks catalytic converter failure, severe combustion damage, or loss of drivetrain performance — problems that rapidly escalate repair costs. At Larry H. Miller Chrysler Dodge Ram FIAT Denver in Denver, CO, our factory-trained technicians prioritize flashing-light cases and perform rapid diagnostics using OEM-level scan tools and factory service information. We test ignition coils, injectors, fuel pressure, and related systems to locate the fault quickly. When you bring a flashing-light vehicle to us, we provide a transparent estimate, explain warranty coverage, and outline immediate and long-term savings from correct repairs done once. Visit our service specials or schedule service online to get priority attention and protect your 2019 Ram 3500 from further damage.

2019 Ram 3500 Check Engine Light Reset

Resetting the check engine light on a 2019 Ram 3500 is straightforward with the right tools, but clearing codes without fixing the underlying issue is short-term thinking. Our Denver service team performs a full diagnostic first, then resets codes after verifying repairs so the issue doesn’t recur. Dealer service offers advantages independent shops may not: OEM replacement parts, software updates, certified technicians, and warranty protection that preserves long-term value. We document repairs and resets in your vehicle history and explain how each repair saves money over time by preventing repeat labor and additional parts failures. Use our online scheduler to schedule appointment, and check current discounts on our service specials. If financing helps, ask about our service financing options so you can get repairs now and pay over time.

2019 Ram 3500 Check Engine Light Codes

Common check engine light codes for the 2019 Ram 3500 include P0420 (catalyst efficiency low), P0300 (random/multiple misfire), P0171/P0174 (fuel trim/system too lean), and oxygen sensor codes. Left unresolved, these can reduce fuel economy, damage the catalytic converter, or lead to severe engine wear — each outcome adds significant cost compared to timely dealer repairs. At Larry H. Miller Chrysler Dodge Ram FIAT Denver, we diagnose codes efficiently and present clear repair paths with OEM parts and warranty-backed labor. We also help customers understand immediate savings from correct diagnosis and long-term value of dealership work, including maintaining emissions compliance and resale value. To protect your investment and schedule prompt diagnostics, schedule service or review our service specials before you arrive.