2021 Dodge Charger Check Engine Light

Certified technicians, only the experts.
Frequently Asked Questions

Frequently Asked Questions

What does it mean when the check engine light comes on in a 2021 Dodge Charger?

  • The check engine light means the vehicle's computer has detected an emissions or drivability issue. It can range from a loose gas cap to a misfire that impacts performance and fuel economy.
  • At Larry H. Miller Chrysler Dodge Ram FIAT Denver our factory-trained technicians perform a complete diagnostic using OEM-grade scanners and manufacturer procedures to pinpoint the cause quickly.
  • Choosing our dealership often costs less than independent shops when you factor immediate fixes, long-term fuel savings, and the right repairs the first time. We also support service financing so you can get repairs now and pay later.
  • Repairs covered under warranty must be completed at a certified dealership to preserve coverage; we’ll explain warranty options and visible pricing before any work begins.

How long does a check engine light service take?

  • Diagnostic scans typically take 30–60 minutes; many repairs—such as replacing sensors or tightening a fuel cap—can be completed the same day.
  • More involved repairs requiring parts or multi-step fixes may take longer; we provide an estimated timeline and keep you informed through each step.
  • To get started quickly, schedule service online and review available service specials to save on recommended repairs.

How much does a check engine light diagnostic cost for a 2021 Dodge Charger?

  • Our pricing is transparent and competitive. Many simple diagnostics are low-cost and can prevent expensive repairs later — saving you money over time.
  • We often cost less than independent shops when you include accurate diagnosis, OEM parts, and warranty-backed repairs that avoid repeat visits.
  • Ask our service advisors about current service specials and financing options to manage the cost while protecting your vehicle’s long-term value.

What is the most common reason for check engine light on a 2021 Dodge Charger?

  • Common causes include faulty oxygen sensors, loose or damaged gas caps, failed catalytic converters, or ignition misfires—each impacting fuel economy or emissions.
  • Addressing these issues promptly at Larry H. Miller Chrysler Dodge Ram FIAT Denver prevents damage escalation, preserves performance, and maintains safety.
  • We recommend diagnostics by certified techs who use OEM software to ensure the correct repair and avoid unnecessary parts replacement.

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

  • Start with basics: ensure the gas cap is tightened. A loose cap is a common trigger and easy to fix.
  • If the light remains, bring your 2021 Dodge Charger to our service center for a coded scan. Our technicians will explain the codes, the immediate costs, and long-term savings of prompt repair.
  • When you’re ready, schedule service online and ask about our service financing options to get repairs completed now and budget them over time.

2021 Dodge Charger Check Engine Light Codes

At Larry H. Miller Chrysler Dodge Ram FIAT Denver we see a handful of recurring codes on the 2021 Dodge Charger that drivers should not ignore. Oxygen sensor codes (P0130–P0167) reduce fuel efficiency and, left unchecked, can damage the catalytic converter—an expensive repair that can cost substantially more than addressing the sensor early. Evaporative system codes (P0455, P0442) often trace to a loose or damaged gas cap or a small leak; fixing it promptly restores fuel economy and emissions compliance. Misfire codes (P0300–P0312) point to spark, fuel, or compression issues; repeated misfires can ruin catalytic components and reduce engine life. We use dealer-level diagnostics to differentiate between sensor faults and underlying mechanical problems, helping you avoid unnecessary part swaps. Choosing our Denver service center provides transparent pricing, OEM parts, and technicians certified on Chrysler, Dodge, RAM, and FIAT systems—meaning faster, more accurate repairs. Review current service specials or schedule service online to lock in savings and protect long-term vehicle value.

2021 Dodge Charger Check Engine Light Reset

Resetting the check engine light on a 2021 Dodge Charger can be straightforward, but a reset without repair masks problems and risks repeat failures. Our team performs a full scan, clears codes only after confirming the fault is corrected, and explains permanent versus temporary resets. Dealer service brings advantages: OEM software access, genuine parts, warranty protections, and records that preserve vehicle history for resale. Independent shops may offer resets, but our certified technicians ensure the root cause is addressed so the light does not return. We also provide clear estimates showing immediate repair cost and long-term savings—fewer repeat visits, better fuel economy, and extended component life. For convenience and peace of mind, schedule service online and check current service specials. We offer service financing so you can get the work done now and pay over time while keeping your Charger on the road safely.

Check Engine Light Flashing

A flashing check engine light on a 2021 Dodge Charger is an urgent warning—commonly indicating an active misfire that can overheat and damage the catalytic converter or cause poor drivability. If the light is flashing, reduce speed and load on the engine, and bring the vehicle to Larry H. Miller Chrysler Dodge Ram FIAT Denver immediately. Our technicians prioritize flashing-light cases, using dealer-grade diagnostic tools to find ignition faults, fuel delivery issues, or sensor failures that require immediate attention. Taking quick action often limits repair scope and cost; delaying can convert a minor repair into a major expense. Ask about our current service specials and service financing to manage unexpected repairs. To protect your engine and avoid further damage, schedule service online now or contact our service team for same-day availability.

Shop by Vehicle

Quick Links

Service by Make

Used Vehicles