Engine Light FAQs — 2018 Dodge Challenger

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

• It signals that the vehicle’s onboard diagnostics detected an issue — from a loose gas cap to emissions, ignition, or sensor faults.
• At Larry H. Miller Chrysler Jeep Dodge Ram Boise, our factory-trained technicians use OEM-level scanners to identify the exact fault and recommend the right repair to restore performance and fuel economy.
• Choosing our dealership often costs less than independent shops over time thanks to accurate diagnostics, proven repairs, OEM parts, and warranty protections that preserve resale value and reduce repeat visits.
• We offer service financing so you can get service now and pay later; repairs covered under warranty must be performed at a certified dealership to remain valid.

How long does a check engine light service take?

• Most diagnostics for a 2018 Dodge Challenger are completed within 30–90 minutes depending on the complexity of codes and test drives.
• If repairs are required, our team provides a clear estimate and timeline — many common fixes are completed the same day.
• To reserve a convenient appointment, schedule service online and take advantage of current service specials for added savings.

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

• Diagnostic pricing varies by issue, but our transparent estimates are competitive; our dealership often costs less than independent shops when you factor immediate and long-term savings from correct repairs and OEM parts.
• We highlight savings from fixing root causes now — better fuel economy, fewer follow-up repairs, and warranty protection.
• If financing helps, ask about our service financing options to spread costs while getting certified service immediately.

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

• Common culprits include loose or faulty gas caps, oxygen sensors, catalytic converter issues, or ignition coil problems — each affects emissions and performance differently.
• Our certified technicians at Larry H. Miller Chrysler Jeep Dodge Ram Boise diagnose quickly with OEM tools and explain the long-term costs of deferring repairs so you can make an informed decision.

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

• Start with the basics: ensure the gas cap is tightened. If the light persists or flashes, avoid extended driving and contact our service center.
• For reliable diagnosis and warranty compliance, have your 2018 Dodge Challenger inspected by our certified team — you can schedule appointment online today.

Check Engine Light Flashing

The check engine light flashing in a 2018 Dodge Challenger usually indicates a serious misfire or condition that can damage the catalytic converter if you continue driving. A flashing lamp is a safety flag: stop driving when safe and bring the vehicle to Larry H. Miller Chrysler Jeep Dodge Ram Boise for immediate diagnosis. Our Boise service center is equipped with OEM scanners and factory-trained technicians who perform a prioritized assessment — we’ll identify misfires, ignition problems, or fuel delivery issues and present clear options. Thanks to our transparent estimates, available service specials, and service financing, customers access fast, certified repairs without unexpected costs. A prompt dealership visit typically prevents more costly repairs and preserves engine life. Contact us or schedule service online for fast, expert attention and clear next steps.

2018 Dodge Challenger Check Engine Light Codes

Common check engine codes for a 2018 Dodge Challenger include P0300 (random/multiple cylinder misfires), P0171/P0174 (lean conditions), P0420 (catalyst efficiency low), and various oxygen sensor or EVAP codes. Ignoring these can lead to reduced performance, lower fuel economy, failed emissions tests, and eventual catalytic converter failure — repairs that can far exceed the cost of timely diagnostics. At Larry H. Miller Chrysler Jeep Dodge Ram Boise, our technicians interpret codes in context using OEM procedures so you get only necessary repairs. We highlight immediate and long-term savings — accurate repairs reduce repeat visits and protect vehicle value. Repairs covered under warranty must be completed at a certified dealership to maintain coverage, and we offer service financing to help you proceed without delay. Book online to take advantage of our customer amenities and efficient service process.

2018 Dodge Challenger Check Engine Light Reset

Resetting the check engine light on a 2018 Dodge Challenger can be done after repairs, but clearing codes without fixing the underlying issue only masks symptoms and risks further damage. At our Boise dealership, we reset codes after completing OEM-recommended repairs and will show you the recorded faults and corrective actions taken. Choosing Larry H. Miller Chrysler Jeep Dodge Ram Boise over an independent shop delivers transparent documentation, genuine OEM parts, certified technicians, and warranty-guided service that protects your investment. We detail the repair, expected lifetime benefits, and any available discounts or service specials. For convenience, schedule appointment online and let our team ensure your Challenger is repaired correctly and the light is only reset once the vehicle is safe and compliant.