Frequently Asked Questions

What does it mean when the check engine light comes on in a 2018 Dodge Challenger?

• It signals the vehicle’s onboard diagnostics has detected an issue — anything from a loose gas cap to an emissions, sensor, charging, or fuel-delivery fault.
• At Larry H. Miller Chrysler Dodge Ram FIAT Denver, our technicians include battery and charging-system tests as part of the diagnostic so you get a complete picture, including battery replacement options if needed.
• We often cost less than independent shops while delivering factory-trained technicians, OEM parts, clear pricing, and documented long-term savings through proper repairs and manufacturer warranties.
• Warranty-covered repairs must be performed at a certified dealership to remain valid; our team will confirm coverage and handle factory procedures for you.
• To get the car checked quickly, schedule service online — we also offer service financing so you can get service now and pay later.

How long does a check engine light service take?

• Most diagnostics take 30–90 minutes depending on codes and necessary tests; battery and charging checks are often completed during that visit.
• If parts or deeper diagnosis are required, we provide a clear estimate and timeline so you can decide — transparency is a priority.
• Our dealership’s streamlined bays, factory tools, and trained techs help reduce turnaround time and protect vehicle longevity.
• Look for current offers before your visit by viewing our service specials.

How much does a check engine light diagnostic cost for a 2018 Dodge Challenger?

• Diagnostic fees vary by issue, but at Larry H. Miller Chrysler Dodge Ram FIAT Denver we provide competitive pricing and clear, written estimates after the scan.
• Choosing our dealership often delivers immediate savings (accurate diagnosis prevents unnecessary parts) and long-term savings through OEM repairs and warranty protection.
• We also offer service financing to spread the cost and keep you on the road safely — ask our advisors for options when you schedule appointment.

What is the most common reason for check engine light on a 2018 Dodge Challenger?

• Common causes include loose/faulty gas caps, oxygen sensor failure, catalytic converter issues, ignition coils, and battery/charging faults that affect engine electronics.
• Because battery problems can mimic engine faults, our checks include state-of-charge and load testing to pinpoint root causes and recommend OEM battery replacements when appropriate.
• Repairs done at our certified dealership protect your warranty and provide lasting value through correct parts, documented service history, and technician training.

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

• First verify gas cap tightness — it’s a quick step that fixes many codes. If the light persists, bring the vehicle to our service center for a full scan and battery/charging test.
• We’ll explain findings, pricing, and options; using OEM parts and certified service frequently reduces repeat visits and overall ownership cost.
• To book, schedule service online and check current service specials.