2020 Dodge Charger Check Engine Light

Certified technicians, only the experts.
Frequently Asked Questions

2020 Dodge Charger Battery & Engine Light Services — Larry H. Miller Dodge RAM FIAT Tucson

Frequently Asked Questions

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

  • It signals that the vehicle’s on-board diagnostics detected an emissions or engine performance issue; codes range from loose gas caps to oxygen sensor or catalytic converter faults.
  • At Larry H. Miller Dodge RAM FIAT Tucson our factory-trained technicians use OEM-grade diagnostics to pinpoint the cause quickly and accurately.
  • Repairing issues promptly preserves fuel economy, prevents further damage, and often saves money long-term compared with deferred repairs.
  • We offer transparent estimates, manufacturer parts, and service financing so you can get service now and pay later; covered warranty repairs must be performed at a certified dealership to remain valid.

How long does a check engine light service take?

  • Most diagnostics are completed in about 30–90 minutes depending on the issue and road-testing needs.
  • If parts or deeper troubleshooting are required, we communicate timelines up front and provide loaner/ride options when available.
  • Our service advisors prioritize fast turnaround without cutting corners—saving time now and protecting your vehicle’s longevity.
  • Ready to book? You can schedule service online for a convenient appointment.

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

  • Diagnostic prices vary by issue, but our dealership often costs less than independent shops while delivering higher-value service from certified technicians using OEM parts.
  • We focus on immediate and long-term savings by fixing root causes rather than temporary fixes, and we’ll detail repair options and expected costs before any work begins.
  • Ask about current service specials and financing options to spread payments and keep your Charger on the road.

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

  • Common causes include loose or faulty gas caps, oxygen sensors, catalytic converter issues, and EVAP system faults.
  • Left unaddressed, these can reduce fuel economy, increase emissions, and lead to more expensive repairs; our team explains consequences and repair priorities clearly.
  • We use OEM diagnostics and parts to restore performance and protect resale value, and we stand behind our work with warranty guidance—remember to have warranty-covered repairs performed at a certified dealership.

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

  • Start with the simple steps: ensure the gas cap is tightened, check for any obvious fluid leaks, and note any unusual noises or drivability issues.
  • If the light persists or is flashing, bring the vehicle to us immediately—our certified technicians will run a full scan and advise the most cost-effective repair plan.
  • Use our online schedule service tool to book an appointment, or check current service specials before you arrive.

Check Engine Light Flashing

The check engine light flashing on a 2020 Dodge Charger is a clear sign that immediate attention is required. A flashing light often indicates a severe misfire, catalytic converter overheating, or other critical faults that can cause engine damage and unsafe driving conditions. At Larry H. Miller Dodge RAM FIAT Tucson in Tucson, AZ, our technicians prioritize vehicles with a flashing light and perform a controlled diagnostic routine that includes an OBD-II scan, live-data analysis, and road testing when safe. Addressing a flashing light quickly reduces the risk of costly downstream repairs and preserves engine longevity. We pair diagnostics with OEM parts and transparent pricing and can help you review financing options so you can get necessary repairs now and pay over time. Check our current service specials for potential savings. If you see a flashing light, stop driving if the vehicle is unsafe and schedule service with our certified team immediately to protect your Charger and your wallet.

2020 Dodge Charger Check Engine Light Codes

Understanding common check engine light codes for a 2020 Dodge Charger helps owners in Tucson make informed decisions. Typical codes include P0420 (catalytic converter efficiency), P0171/P0174 (lean fuel trim), P0300/P0301 (misfires), and P0455 (evaporative system leak). Each code has cost implications: ignoring a P0420 can lead to a failed emissions test and a costly converter replacement; unaddressed misfires risk engine damage; EVAP leaks often worsen over time and reduce fuel economy. At Larry H. Miller Dodge RAM FIAT Tucson, our factory-trained techs decode the exact fault, present repair options, and explain the immediate and long-term savings of timely repairs. We offer OEM parts, warranty compliance, and helpful financing plans to spread payments. Our local team in Tucson emphasizes convenience—fast diagnostics, clear estimates, and efficient repairs—so your Charger returns to peak performance. To get a precise read and clear next steps, please schedule service or view available service specials.

2020 Dodge Charger Check Engine Light Reset

Resetting the check engine light on a 2020 Dodge Charger can be straightforward, but a reset without repairing the underlying issue is only a temporary fix. Our dealership recommends a full diagnostic before resetting: we retrieve and interpret stored codes, clear them, and then perform a monitored drive cycle to ensure the fault does not return. Choosing Larry H. Miller Dodge RAM FIAT Tucson means you get transparent service, OEM replacement parts, and technicians trained to factory standards, preserving your warranty and long-term reliability. We also explain why independent reset tools may miss pending issues or mask problems that lead to future repairs. To make service affordable, we provide financing and post-service guidance, and we frequently run service specials to lower your cost. If you want a proper fix and documented repair history to protect resale value, schedule service with our certified team today.

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