What does it mean when the check engine light comes on in a 2018 Ram 3500?

• It signals the vehicle’s onboard diagnostics detected an issue—anything from a loose gas cap to a catalytic converter fault. Our technicians use factory-grade scanners to read precise codes and recommend the correct repair path.
• Choosing Larry H. Miller Chrysler Jeep Dodge Ram Boise often costs less than independent shops over time thanks to accurate diagnostics, OEM parts, and repairs that prevent repeat visits and protect resale value.
• Warranty-covered repairs must be performed at a certified dealership to remain valid; we’ll clearly explain coverage and options, and we offer service financing so you can get repairs now and pay later.
• To get a clear diagnosis, schedule service with our Boise service team and ask about current service specials.

How long does a check engine light service take?

• Most diagnostics are completed the same day. Basic scans and minor repairs can be under an hour; more involved repairs (parts ordering or in-depth troubleshooting) take longer but we keep you informed.
• We prioritize 2018 Ram 3500 customers with efficient bay allocation, OEM parts inventory, and experienced technicians to minimize downtime—especially important for owners who tow or work with their truck.
• We explain immediate fixes and recommended follow-ups, helping you save money now and avoid larger expenses later. Book to confirm estimated times via our online scheduler at schedule service.

How much does a check engine light diagnostic cost for a 2018 Ram 3500?

• Diagnostics at our dealership start as low as $82.95 for a standard engine light scan. This competitive price delivers precise, dealer-level diagnostics that reduce the risk of incorrect repairs.
• Working with our certified technicians often provides immediate and long-term savings compared with pay-for-trial approaches—accurate fixes, OEM parts, and documented repair history that protects warranty and resale value.
• Ask about financing options to handle repairs today and pay over time, and check our service specials for seasonal offers that lower out‑of‑pocket cost.

What is the most common reason for check engine light on a 2018 Ram 3500?

• Common causes include loose fuel caps, faulty oxygen sensors, catalytic converter issues, and ignition/misfire events. For the 2018 Ram 3500—especially high‑use or towing trucks—oxygen sensors and exhaust-related faults are frequent.
• Ignoring codes can increase fuel use, reduce towing capacity, and accelerate component wear; our dealership focuses on root-cause repairs to protect torque, horsepower, and drivetrain longevity.
• We’ll provide a clear repair estimate and recommend certified parts; schedule via schedule appointment and review available service specials.

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

• Start with the gas cap—ensure it’s tight and undamaged—then proceed to get a diagnostic scan to capture codes. Our technicians perform a full inspection to prioritize repairs that restore performance quickly.
• Dealing with a certified dealership ensures accuracy, OEM replacements, and warranty integrity; any warranty-covered repairs must be done at a certified dealership to remain valid.
• To get a fast, reliable inspection, schedule service at Larry H. Miller Chrysler Jeep Dodge Ram Boise and ask about our service financing and current service specials.

2018 Ram 3500 Check Engine Light Reset

The proper reset for a 2018 Ram 3500 begins with an accurate diagnostic read to identify and repair the underlying fault—simply clearing codes without fixing the cause can lead to recurring problems, reduced fuel economy, and potential drivetrain damage. At Larry H. Miller Chrysler Jeep Dodge Ram Boise, our technicians use OEM-level scanners and guided repair procedures to ensure resets are permanent because the root cause is addressed. We explain each recommended repair and the warranty implications; if a repair is covered, it must be performed at a certified dealership to keep warranty protection intact. We also stock OEM batteries and offer full battery replacement services sized for the 2018 Ram 3500 to ensure reliable starts under heavy load. Transparency is key: you’ll get a clear estimate, expected timeline, and options to finance service so you can get the work done now and pay over time. To prioritize reliability and avoid repeat visits, schedule service with our Boise service center and review available service specials.

2018 Ram 3500 Check Engine Light Codes

Common check engine light codes for the 2018 Ram 3500 include misfire codes (P0300–P030x), oxygen sensor codes (P0130–P0167), and catalytic converter codes (P0420). Misfires left unchecked can ruin catalytic converters and cause drivability issues; oxygen sensor failures increase fuel consumption and emissions; catalytic faults can lead to costly exhaust repairs and failed emissions tests. At Larry H. Miller Chrysler Jeep Dodge Ram Boise, we diagnose codes quickly, explain short‑ and long‑term cost implications, and recommend OEM replacements that protect towing capability and engine longevity. Our certified technicians take a methodical approach—live diagnostics, road testing, and targeted repairs—so you avoid unnecessary parts swaps and get lasting value. We emphasize speed and convenience: same‑day inspections when possible, clear pricing, and service financing options. For precision and value, schedule service or browse our service specials before your visit.

Check Engine Light Flashing

A flashing check engine light on a 2018 Ram 3500 usually signals a severe condition such as active engine misfire that can damage the catalytic converter immediately. When a light flashes, do not continue normal driving—pull over safely and bring the truck to our Boise dealership for immediate attention. Larry H. Miller Chrysler Jeep Dodge Ram Boise treats flashing lights as high priority: we offer fast diagnostics, OEM parts, and experienced technicians trained on heavy‑duty Ram systems to reduce repair time and cost. We often have loaner options and prompt bays to get you back on the road quickly. Cost‑saving service specials and transparent estimates help manage repair expense, and our service financing program lets you proceed with necessary repairs without delay. For urgent attention, schedule appointment now or call our service desk to get priority handling and learn about current service specials.