Frequently Asked Questions

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

• It signals your vehicle’s onboard diagnostics detected an issue—anything from a loose gas cap to an emissions or engine sensor fault.
• At Larry H. Miller Chrysler Dodge Ram FIAT Denver we diagnose with factory-grade tools to pinpoint the cause quickly, often costing less than independent shops while delivering long-term savings through correct repairs and OEM parts.
• Warranty-covered repairs must be completed at a certified dealership; our technicians are factory-trained and use OEM parts to protect your vehicle’s longevity and warranty.
• We offer service financing so you can get needed repairs now and pay later; to book, please schedule service online.

How long does a check engine light service take?

• Most diagnostics take 30–90 minutes depending on codes and road testing; some repairs are same-day when parts are available.
• Our certified technicians prioritize efficient, accurate work—saving you time and preventing repeat visits through thorough testing and OEM replacements.
• To minimize wait time, view current offers on our service specials and schedule appointment online.

How much does a check engine light diagnostic cost for a 2020 Ram Promaster Cargo Van?

• Diagnostic pricing varies by issue, but Larry H. Miller Chrysler Dodge Ram FIAT Denver often offers competitive rates that beat independent shops when you factor in technician skill, OEM parts, and warranty protection.
• Our transparent pricing and documented inspections help you see immediate savings and avoid long-term costs from incorrect repairs.
• Ask about current service specials and financing options when you schedule service.

What is the most common reason for check engine light on a 2020 Ram Promaster Cargo Van?

• Common causes include faulty oxygen or mass air flow sensors, loose fuel caps, ignition misfires, or catalytic converter issues—each with different cost and urgency implications.
• Addressing codes early at our Denver service center avoids escalating repair costs and preserves fuel economy and engine life.
• Certified repairs performed here protect your warranty; we also offer service financing so you can proceed with confidence.

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

• Start with the simple items: ensure the gas cap is tightened. If the light persists, bring the vehicle to our certified technicians for a professional scan.
• Our team at Larry H. Miller Chrysler Dodge Ram FIAT Denver uses OEM diagnostic tools to identify codes and recommend repairs that deliver long-term value.
• Use our online tools to view service specials and schedule service promptly to prevent further damage.

Check Engine Light Flashing

A flashing check engine light on a 2020 Ram Promaster Cargo Van signals an active misfire or a condition that could damage the catalytic converter. This is an urgent indicator—do not continue high-speed driving. At Larry H. Miller Chrysler Dodge Ram FIAT Denver in Denver, CO, our technicians perform immediate, prioritized inspections to identify misfires, ignition faults, or fuel system issues. A timely, accurate diagnosis prevents expensive downstream repairs and preserves engine performance and emissions compliance. We use OEM diagnostic tools and parts to ensure each repair meets factory specifications; warranty-covered work must be completed at a certified dealership, and our service advisors will explain warranty implications clearly. We frequently run targeted service specials that can lower out-of-pocket costs, and we offer service financing so you can get the repair done now and pay later. To protect your vehicle and avoid further damage, please schedule service online or contact our service team directly. Our goal is fast, transparent repairs that get you back on the road with confidence.

2020 Ram Promaster Cargo Van Check Engine Light Codes

The most common check engine light codes for a 2020 Ram Promaster Cargo Van include P0300 (random/multiple misfires), P0420 (catalyst system efficiency), P0171/P0174 (fuel trim system too lean), and various oxygen or MAF sensor codes. Ignoring these codes can lead to reduced fuel economy, failed emissions tests, catalytic converter damage, and higher repair costs over time. At Larry H. Miller Chrysler Dodge Ram FIAT Denver we map each code to a clear repair recommendation and estimate so you understand immediate costs and long-term savings. Our certified technicians use factory procedures and OEM parts to fix root causes, not just clear codes, which protects your vehicle’s lifespan and resale value. We offer transparent estimates, available service specials, and flexible financing to spread repair costs. Serving Denver, CO, our service department prioritizes quick turnaround and quality—book online to schedule service and get a written diagnostic report and solution options.

2020 Ram Promaster Cargo Van Check Engine Light Reset

Resetting the check engine light on a 2020 Ram Promaster Cargo Van may clear the indicator temporarily but won’t fix underlying issues. Dealers like Larry H. Miller Chrysler Dodge Ram FIAT Denver recommend a professional diagnostic before any reset so problems are repaired correctly and warranty coverage remains intact. Our certified technicians explain error codes, recommend OEM parts, and document repairs clearly so you know the cost-benefit and long-term value of service. We emphasize dealership transparency: written estimates, factory-trained techs, and parts that meet Ram specifications. When a reset is appropriate after repairs, we perform it and verify the repair with road testing and re-scan procedures. To help customers, we list current service specials, and provide service financing options to make necessary repairs manageable. For honest guidance and dependable results in Denver, schedule appointment online and let our team protect your Promaster’s performance and warranty.