2020 Dodge Challenger Check Engine Light

Certified technicians, only the experts.
Frequently Asked Questions

Battery Services & Engine Light Diagnostics for 2020 Dodge Challenger

At Larry H. Miller Dodge RAM FIAT Tucson in Tucson, AZ, our certified technicians deliver fast battery testing, battery replacement, and complete engine light diagnostics for your 2020 Dodge Challenger. We use OEM-recommended parts, offer service financing to get repairs done now and pay later, and provide transparent pricing and long-term value. Learn about specials and savings on maintenance with our service specials or schedule service online today.

Frequently Asked Questions

What does it mean when the check engine light comes on in a 2020 Dodge Challenger?

  • It signals your vehicle's onboard diagnostics detected an issue — anything from an emissions sensor to fuel or ignition concerns. Our factory-trained technicians at Larry H. Miller Dodge RAM FIAT Tucson run a complete scan and interpret codes to recommend the right repairs.
  • We emphasize immediate and long-term savings: accurate diagnostics prevents unnecessary parts replacement and helps maintain resale value. In many cases our dealership pricing competes with or costs less than independent shops while offering OEM parts, factory diagnostics, and warranty protection.
  • Any repairs covered under warranty must be performed at a certified dealership to preserve coverage. We also offer service financing to help you get necessary work done now and pay over time.
  • To act quickly and protect your vehicle, schedule service with our team in Tucson.

How long does a check engine light service take?

  • Diagnostic scans are often completed within 30–60 minutes; follow-up repairs vary by needed work. Simple fixes like a sensor replacement or battery-related issue can take an hour or two, while more complex repairs may require parts ordering and additional time.
  • Larry H. Miller Dodge RAM FIAT Tucson focuses on quick turnaround with transparent estimates, OEM parts, and certified technicians to reduce repeat visits and extend vehicle longevity.
  • We explain each recommended repair clearly and show how dealership service can produce immediate savings via accurate diagnoses and reduce long-term costs by preventing major failures.
  • Ready to reserve a time? Use our online scheduler to schedule appointment.

How much does a check engine light diagnostic cost for a 2020 Dodge Challenger?

  • Costs vary by issue, but our dealership frequently offers competitive diagnostic pricing and promotional savings. We often cost less than independent shops while delivering factory-level tools, OEM parts, and warranty support — delivering both immediate and long-term value.
  • Diagnostics provide a clear plan and estimate before any repair work begins, so you only pay for what’s necessary. Ask about current service specials to lower out-of-pocket cost.
  • If a repair is covered by warranty, it must be completed at a certified dealership to maintain coverage; our team will verify warranty eligibility and walk you through next steps.
  • We also offer service financing so you can address urgent repairs today and pay over time.

What is the most common reason for check engine light on a 2020 Dodge Challenger?

  • Common triggers include loose or failing gas caps, oxygen sensors, mass airflow sensors, or ignition components. For the 2020 Dodge Challenger, emissions and sensor issues are frequent causes if left unchecked.
  • Prompt diagnosis keeps small issues from becoming costly repairs. Our technicians use factory-grade tools to identify root causes quickly and recommend OEM parts when needed to ensure correct performance and longevity.
  • Choosing dealership service often reduces long-term costs by preventing repeated failures and preserving warranty coverage when applicable.
  • Schedule an inspection now by clicking to schedule service.

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

  • Start with a visual check: tighten a loose gas cap, and monitor for obvious leaks or unusual noises. If the light persists, bring your vehicle to our service department for a proper scan and diagnosis.
  • At Larry H. Miller Dodge RAM FIAT Tucson we perform a complete diagnostic scan, explain results in plain terms, and provide a written estimate before repairs. This transparency maximizes savings and confidence in the work performed.
  • Remember repairs under warranty must be completed at a certified dealership; we’ll confirm coverage and available discounts or service specials.
  • Use our convenient online tools to schedule appointment and get back on the road with confidence.

Check Engine Light Flashing

A flashing check engine light on a 2020 Dodge Challenger usually indicates an active misfire or a condition that can damage the catalytic converter. That means the engine is not combusting fuel properly in one or more cylinders, which can produce excessive heat and harmful emissions. At Larry H. Miller Dodge RAM FIAT Tucson our certified technicians prioritize these cases and recommend immediate inspection. We perform a thorough diagnostic scan, inspect ignition components, fuel delivery, and emissions systems, and present a clear repair plan. Acting quickly avoids expensive downstream damage, and our OEM parts and factory training ensure repairs restore peak performance and torque delivery. We also offer service financing to help you complete urgent repairs now and pay over time, plus regular service specials to lower costs. For safety and to protect long-term value, schedule service online or call our Tucson service team for priority appointment availability.

2020 Dodge Challenger Check Engine Light Reset

Resetting the check engine light on a 2020 Dodge Challenger is a simple step after repairs, but it does not substitute for proper diagnosis or warranty-protected work. Our dealership explains code history, clears codes only after the underlying issue is resolved, and verifies the repair with a test drive and follow-up scan. Choosing Larry H. Miller Dodge RAM FIAT Tucson over a generic shop means you receive OEM parts, certified technicians, and documentation that preserves warranty eligibility. We guarantee transparency: you get a clear estimate, a description of parts used, and an explanation of long-term benefits, such as improved MPG and reduced emissions. That honesty translates into immediate and long-term savings by preventing repeated visits and addressing root causes. Take advantage of our manufacturer-trained team and available service specials. Ready to restore your Challenger? Schedule appointment online now.

2020 Dodge Challenger Check Engine Light Codes

Common check engine codes for a 2020 Dodge Challenger include P0420 (catalyst efficiency), P0300 (random/multiple cylinder misfire), P0171/P0174 (system too lean), and sensor-related codes (oxygen or mass airflow sensor faults). Ignoring these codes can lead to decreased horsepower, reduced fuel economy, costly catalytic converter replacement, and potential safety issues. At Larry H. Miller Dodge RAM FIAT Tucson in Tucson, AZ, our diagnostics identify code causes quickly and outline repair costs and timelines so you can weigh options. We provide OEM parts, certified technicians, and documented repairs that protect resale value and warranty coverage. Using dealership service often yields immediate savings from accurate diagnosis and long-term savings by preventing premature component failure. Explore our current service specials and schedule service online to get priority care from Tucson's trusted Dodge, RAM, and FIAT service center.