2018 Dodge Journey 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 2018 Dodge Journey?

  • It signals a detected fault in the engine, emissions, or related systems; codes range from minor sensor alerts to issues that affect drivability.
  • At Larry H. Miller Chrysler Dodge Ram FIAT Denver in Denver, CO, our certified technicians read OBD-II codes and explain the exact cause and repair options clearly.
  • We often cost less than independent shops while delivering factory-trained expertise, OEM parts, and long-term savings through correct repairs and warranty coverage.
  • Any repairs covered under warranty must be performed at a certified dealership to keep your coverage intact.
  • To get a fast, accurate diagnosis, schedule service online; we also offer service financing so you can get service now and pay later.

How long does a check engine light service take?

  • Typical diagnostics take 30–90 minutes depending on the issue; simple sensor swaps may be completed the same day while more complex repairs need additional time for parts or testing.
  • Our technicians use OEM procedures and genuine parts to ensure reliability and preserve vehicle value, reducing repeat visits and long-term costs.
  • We prioritize transparency—estimates are provided before work begins, and any covered warranty repairs must be done at a certified dealership.
  • Take advantage of our current service specials to lower your out-of-pocket expense and consider our service financing options to spread payments.
  • To reserve a convenient time, schedule appointment online with Larry H. Miller Chrysler Dodge Ram FIAT Denver.

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

  • Diagnostic fees commonly start around $89; at Larry H. Miller Chrysler Dodge Ram FIAT Denver we deliver high-value diagnostics and often cost less than independent shops while providing factory-level service.
  • Our upfront pricing and accurate diagnosis help you avoid expensive unnecessary repairs—an accurate fix today reduces long-term expenses like failed catalytic converters or engine damage.
  • Remember: any warranty repairs must be completed at a certified dealership to maintain coverage and benefits.
  • We provide flexible payment options including service financing so you can address issues immediately without delay.
  • Book fast diagnostics and peace of mind by visiting our schedule service page or check our service specials for savings.

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

  • Common causes include faulty oxygen sensors, loose gas caps, evaporative emissions leaks, or ignition misfires; each has a different urgency and repair cost if left untreated.
  • Left unchecked, small issues like a bad O2 sensor lead to poor fuel economy and higher emissions; misfires can damage the catalytic converter and lead to much higher repair bills.
  • At Larry H. Miller Chrysler Dodge Ram FIAT Denver our certified techs identify root causes and recommend affordable, lasting repairs that often save money over time.
  • We honor factory warranties only when serviced at certified dealerships and we offer service financing to make timely repairs more manageable.
  • To protect your 2018 Dodge Journey, schedule service promptly and review our service specials for current offers.

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

  • Start with basic checks: ensure the gas cap is tightened, check for obvious leaks, and listen for rough running—these steps are quick and can resolve simple alerts.
  • If the light persists, bring your vehicle to Larry H. Miller Chrysler Dodge Ram FIAT Denver where our OBD-II scan pinpoints the code and our factory-trained technicians explain necessary repairs.
  • Using OEM parts and certified procedures ensures repairs last longer and maintain warranty eligibility; any warranty-covered work must be done at a certified dealership.
  • We offer service financing so you can get necessary work done now and pay over time; check our service specials for added savings.
  • When you’re ready, schedule appointment online for fast diagnostics and expert service in Denver, CO.

Check Engine Light Flashing

A flashing check engine light on a 2018 Dodge Journey often signals a severe misfire that can quickly damage the catalytic converter and other engine components. Immediate attention is required: reduce load, avoid towing heavy loads, and safely get off the road. At Larry H. Miller Chrysler Dodge Ram FIAT Denver in Denver, CO, our service team treats flashing lights as high priority—fast diagnostics minimize secondary damage and preserve long-term value. We use manufacturer-grade scanners and follow OEM-recommended troubleshooting to identify misfire sources such as ignition coils, spark plugs, fuel delivery issues, or engine mechanical faults. Addressing the root cause promptly avoids costly downstream repairs and improves fuel economy. We also provide transparent estimates, OEM parts, and technician certification so repairs are done right the first time; any warranty-covered work must be completed at a certified dealership. Ask about our current service specials, available loyalty benefits, and service financing. To act quickly, schedule service online or contact our service team for immediate assistance.

2018 Dodge Journey Check Engine Light Reset

Resetting the check engine light on a 2018 Dodge Journey is straightforward with an OBD-II scanner, but clearing the light without fixing the underlying fault is only a temporary fix that can mask serious problems. At Larry H. Miller Chrysler Dodge Ram FIAT Denver we emphasize diagnosis first—our factory-trained technicians read freeze-frame data and live sensor values to pinpoint the cause before recommending repair. Choosing the dealership ensures transparency: written estimates, OEM replacement parts, proper software updates, and documented repairs that protect warranty coverage; remember that any repairs covered under warranty must be performed at a certified dealership. Resetting the light after a verified repair confirms the issue is resolved and maintains vehicle health and resale value. We make this process convenient with online booking, comfortable customer amenities, and service financing options so you can get necessary work done now and pay over time. Check our service specials and schedule service to keep your 2018 Dodge Journey running reliably.

2018 Dodge Journey Check Engine Light Codes

The most common check engine light codes for a 2018 Dodge Journey include P0420 (catalyst system efficiency low), P0171 (system too lean), P0300–P0304 (multiple or cylinder-specific misfires), and P0455 (large EVAP leak). Each code points to specific risks and potential costs: P0420 left untreated can lead to a failed catalytic converter costing well over $1,000; persistent misfires (P03xx) can damage the converter and internal engine parts, increasing repair bills significantly; EVAP leaks often start with inexpensive repairs but will trigger failed emissions tests if unresolved. In Denver, Larry H. Miller Chrysler Dodge Ram FIAT Denver offers precise diagnostics, OEM parts, and factory training—reducing the chance of recurring issues and delivering long-term savings. We combine quick turnaround times, clear estimates, and warranty-backed repairs to help you avoid surprise expenses. For transparent pricing and to take advantage of seasonal service specials, schedule service with our team today. Our certified technicians will diagnose codes, explain repair options, and prioritize repairs that extend vehicle life and protect your investment.