Frequently Asked Questions

What does it mean when the check engine light comes on in a 2018 Ram Promaster City?

• It signals a fault detected by the vehicle’s onboard diagnostics — anything from a loose gas cap to an emissions or engine performance issue.
• At Larry H. Miller Chrysler Dodge Ram FIAT Denver we diagnose the root cause quickly with factory-grade scanners and certified technicians to minimize downtime and long-term repair costs.
• Our pricing is competitive; we often cost less than independent shops while offering OEM parts, manufacturer-level warranties, and service financing so you can get repairs now and pay later.
• Repairs covered under warranty must be performed at a certified dealership to keep coverage valid — we’ll clearly explain warranty status before any work begins.

How long does a check engine light service take?

• Typical diagnostics for a 2018 Ram Promaster City take about 30–60 minutes, depending on fault complexity.
• If parts or repairs are required, we give clear time estimates and work efficiently to reduce your vehicle’s out-of-service time.
• Use our online tool to schedule service — we offer express service lanes and comfortable customer amenities at our Denver location to keep you moving.
• Check our service specials for bundled savings and service financing options to help with immediate and long-term savings.

How much does a check engine light diagnostic cost for a 2018 Ram Promaster City?

• Diagnostic fees vary by issue, but our transparent estimates and competitive pricing often beat independent shops while delivering OEM-quality repairs.
• We emphasize immediate savings (accurate diagnosis avoids unnecessary parts) and long-term value (proper repairs extend vehicle life), and we’ll detail all costs before work begins.
• Service financing is available so you can address problems now and pay over time; repairs covered under warranty must be performed at a certified dealership to maintain coverage.

What is the most common reason for check engine light on a 2018 Ram Promaster City?

• Common causes include loose gas caps, oxygen sensor failures, ignition misfires, and catalytic converter issues.
• Leaving these unchecked can increase fuel use, damage components, and raise repair costs; our certified technicians in Denver will identify the exact cause and recommend the most cost-effective solution.
• We encourage customers to check for available service specials and to schedule service promptly for both immediate savings and long-term protection.

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

• Start with the simple checks: ensure the gas cap is tightened and inspect for obvious issues. If the light persists or flashes, bring your 2018 Ram Promaster City to our certified team right away.
• Our dealership performs accurate diagnostics with OEM tools, offers service financing, and honors warranty conditions — repairs under warranty must be done at a certified dealership like ours.
• To save time, schedule appointment online and review current service specials before you arrive.