Engine Light & Battery FAQs — 2020 Dodge Challenger

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

• It indicates the vehicle’s onboard diagnostics detected an issue — anything from a loose gas cap to a failing sensor or battery-related charging problem. Our certified technicians at Larry H. Miller Chrysler Dodge Ram FIAT Denver diagnose the exact code and explain priority repairs and costs.
• Choosing our dealership often costs less than independent shops because we combine transparent pricing, OEM parts, and factory-trained expertise — helping you avoid repeat visits and long-term expense.
• Repairs covered under any warranty must be performed at a certified dealership to remain valid; we honor manufacturer coverage and provide clear documentation.
• We offer service financing so you can get needed repairs or a battery replacement now and pay later. To arrange work, please schedule service.
• Check our current offers before you visit by viewing our service specials.

How long does a check engine light service take?

• Diagnostics typically take 30–60 minutes; most repairs or a battery replacement can be completed the same day depending on parts and severity.
• At Larry H. Miller Chrysler Dodge Ram FIAT Denver we prioritize quick turnarounds, use OEM parts, and keep you updated to reduce downtime and long‑term costs.
• We can often perform a battery test and replacement within an hour; to guarantee a slot, please schedule appointment.

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

• Diagnostics are competitively priced at our Denver service center — we provide a clear estimate and explain immediate and long‑term savings from using our factory-trained technicians.
• Because we stock OEM batteries and parts, repairs are faster and reduce the chance of repeat visits, saving you money over time.
• Ask about financing options and current service specials to reduce out‑of‑pocket cost.

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

• Common triggers include oxygen sensor faults, catalytic converter issues, misfires, and charging or battery problems that affect engine control systems.
• Addressing codes quickly prevents damage — for example, ignored misfires or charging faults can harm the catalytic converter, increasing repair costs.
• We perform comprehensive inspections and offer OEM battery replacement so your 2020 Dodge Challenger returns to peak performance.

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

• Start with simple items: confirm the gas cap is tight and check for obvious battery or charging symptoms (dim lights, slow cranking).
• If symptoms persist, bring your vehicle in for a diagnostic scan at Larry H. Miller Chrysler Dodge Ram FIAT Denver; our technicians will identify codes and recommend durable OEM solutions.
• To get prioritized service and financing options, schedule service today and review our service specials.

Check Engine Light Flashing

The moment a check engine light flashes on your 2020 Dodge Challenger it signals a severe misfire or other condition that could cause immediate engine or catalytic converter damage. In Denver, drivers trust Larry H. Miller Chrysler Dodge Ram FIAT Denver to assess flashing lights fast. A flashing light often means the engine is running poorly and producing unburned fuel into the exhaust stream, which can overheat and fail the catalytic converter if left unchecked. Our certified technicians perform an efficient scan, inspect ignition and fuel systems, and test the battery and charging system — because a weak battery or faulty alternator can exacerbate electrical faults that trigger codes. We explain findings in plain language, provide transparent pricing, and use OEM parts to restore reliability. Take advantage of service financing and current service specials, and schedule service online for prompt attention.

2020 Dodge Challenger Check Engine Light Reset

Resetting the check engine light on a 2020 Dodge Challenger is a simple step only after the underlying issue is diagnosed and repaired. At Larry H. Miller Chrysler Dodge Ram FIAT Denver we don’t recommend clearing codes without fixing the cause because the light will likely return and could mask intermittent issues. Our dealership approach is transparent: we diagnose with factory-grade tools, discuss OEM part options, and document repairs so warranty coverage remains intact — remember, warranty repairs must be done at a certified dealership. Using our service ensures accurate resets, correct repairs, and long-term savings by preventing recurring failures. We also offer battery testing and replacements with OEM batteries sized for the Challenger’s V8, improving reliability and preventing electrical faults that trigger engine codes. To protect performance and warranty coverage, choose our certified team, explore current service specials, and schedule appointment online.

2020 Dodge Challenger Check Engine Light Codes

Common codes for a 2020 Dodge Challenger include misfire codes (P0300–P0308), oxygen sensor faults (P0130–P0167), and catalytic converter efficiency codes (P0420). In Denver, Larry H. Miller Chrysler Dodge Ram FIAT Denver evaluates these codes to identify whether the root cause is ignition, fuel, exhaust, or electrical — including a weak battery or charging issue. Ignoring misfires can lead to costly catalytic converter failure; unresolved oxygen sensor faults reduce fuel economy and increase emissions; electrical issues left unattended shorten component life. Our certified technicians use OEM parts and factory procedures to minimize repair frequency and maximize resale value, delivering immediate savings through accurate diagnostics and long-term savings by preventing collateral damage. We welcome questions about warranty coverage, service financing, and time-saving amenities at our Denver service center. For transparent pricing and reliable repairs, check our service specials and schedule service online.