Frequently Asked Questions

What does it mean when the check engine light comes on in a 2021 Ram Promaster Cargo Van 2500 High Roof?

• It indicates the vehicle’s engine management system has detected an issue — anything from an emissions sensor fault to ignition or fuel delivery problems. At Larry H. Miller Chrysler Dodge Ram FIAT Denver our certified technicians use factory-grade scanners to identify and explain the exact code and repair needs.
• We often cost less than independent shops because our processes, genuine OEM parts and bundled service options reduce repeat visits and long-term ownership costs. That means immediate savings and fewer unexpected bills over time.
• Warranty-covered repairs must be completed at a certified dealership to remain valid; our technicians are factory-trained and document every step for warranty compliance.
• To get a clear diagnosis and timeline, schedule service online or check our current service specials before you come in.

How long does a check engine light service take?

• Triage and OBD-II code read typically take 20–45 minutes. Full diagnostics and recommended repairs vary by fault but our technicians at Larry H. Miller Chrysler Dodge Ram FIAT Denver prioritize fast turnarounds and transparent estimates.
• Many minor fixes (sensor replacement, loose gas cap, software update) can be completed the same day. More involved repairs that need parts will be scheduled promptly with clear timelines and an itemized estimate.
• We offer service financing so you can address issues now and pay over time, which helps prevent small problems from becoming costly repairs later.
• To reserve a time slot and reduce wait, schedule appointment or review our service specials for eligible discounts.

How much does a check engine light diagnostic cost for a 2021 Ram Promaster Cargo Van 2500 High Roof?

• Diagnostic fees can vary by the type of test required. At Larry H. Miller Chrysler Dodge Ram FIAT Denver we provide clear estimates and recommend repairs that reduce long-term ownership costs; in many cases our bundled services and OEM parts deliver greater lifetime value than a single lower-priced visit elsewhere.
• If a repair is needed, we present options and explain savings from using OEM parts and factory-trained labor, plus how warranty coverage factors into total cost.
• Ask our service team about financing to spread payments and avoid deferring essential repairs that could increase future expenses.
• To get a precise diagnostic estimate, schedule service or see available incentives on our service specials.

What is the most common reason for check engine light on a 2021 Ram Promaster Cargo Van 2500 High Roof?

• Common causes include loose or faulty gas caps, oxygen sensors, catalytic converter issues, mass airflow sensor faults, or ignition misfires. Each code has different implications for fuel economy, emissions and long-term engine health.
• Addressing the issue quickly at Larry H. Miller Chrysler Dodge Ram FIAT Denver preserves fuel economy and prevents more expensive downstream repairs; our technicians recommend the most cost-effective OEM solutions.
• Repairs covered under warranty must be completed at a certified dealership to retain coverage — we handle warranty paperwork and perform authorized repairs to protect your ownership investment.
• To confirm the cause and get a transparent estimate, schedule service and look for current offers on our service specials.

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

• Start with basic checks: ensure the gas cap is tightened; check fluid levels and look for obvious issues. If the light remains on, a diagnostic scan is the next step to read the exact fault code.
• Bring the vehicle to Larry H. Miller Chrysler Dodge Ram FIAT Denver for a professional scan. Our certified techs use factory diagnostics to avoid misdiagnosis and to recommend repairs that save money over time.
• We emphasize speed, transparency and OEM-quality repairs; when warranty work is needed, it must be completed at a certified dealership to remain valid — we’ll handle that for you.
• To get started quickly, schedule service or review limited-time savings on our service specials.