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It means your Durango’s OBD-II system stored a diagnostic trouble code (DTC) identifying an affected system.

The light signals the engine or emissions system detected a fault—ranging from a loose gas cap to sensor, ignition, or catalyst issues. Our Danvers team retrieves the DTC and freeze-frame data to pinpoint cause on the 3.6L V6. Avoid guessing; proper diagnosis protects performance and emissions compliance in Massachusetts.

• Common triggers: EVAP leak, O2 sensor, misfire, MAF, catalytic converter efficiency
• First step: check fuel cap fitment on your regular-unleaded Durango
• Schedule a professional scan: schedule service

The five most common causes are O2 sensor faults, EVAP leaks (loose cap), MAF issues, catalytic converter efficiency, and ignition misfire.

These patterns are typical for the 3.6L V6 paired with the 8-speed automatic and 4WD. New England temperature swings can accent EVAP leaks, while aging sensors or plugs can trigger misfires that, left unchecked, risk catalyst damage. Our Danvers service team isolates the exact component before repair.

• Start with a gas cap inspection and seal check
• Scan for stored DTCs and review freeze-frame data
• Fix root cause to protect fuel economy (19/26 mpg EPA ratings)

If steady, drive cautiously to service; if flashing, stop driving to avoid severe misfire and catalytic converter damage.

A steady light often points to emissions-related issues like an EVAP or sensor fault; you can proceed gently to our Danvers location. A flashing light indicates active misfire that can overheat the catalyst on your Durango. Reduce load, avoid towing (rated up to 7,400 lbs), and arrange diagnostics promptly.

• Flashing = tow or stop to prevent costly damage
• Steady = limit trips and schedule service soon
• Check for fuel-cap warning and recent refueling events

A parts store reads a generic code, while dealer diagnostics use factory scan tools, guided tests, and OEM data to find the root cause.

One DTC can have multiple underlying failures; replacing parts based on a code alone is guesswork. In Danvers, our OEM-trained technicians access proprietary modules, run bidirectional tests, and perform isolation checks before presenting a written estimate. That approach helps avoid repeat lights and unnecessary parts.

• Factory scan-tool access and software updates
• Freeze-frame review and pinpoint testing on the 3.6L V6
• Written findings and estimate before repair; see service specials

No—clearing the light resets readiness monitors, and your Durango will not pass until monitors complete required drive cycles.

Massachusetts inspections verify that OBD-II readiness tests are complete and that no active MIL is present. Simply erasing codes delays monitor completion and can result in an automatic fail. Fixing the root cause and verifying monitor readiness is the reliable path to a pass.

• Complete repair, then confirm monitors are “Ready”
• Drive-cycle guidance provided after diagnostics
• Book a verification check: schedule service

It indicates an active misfire severe enough to risk catalytic converter damage—stop driving and arrange service.

A flashing MIL is a protective alert for your Durango’s emissions system. Continuing to drive—especially under load or highway speeds—can overheat and melt the catalyst, multiplying repair costs. We can inspect ignition coils, plugs, and fuel delivery, then provide a written estimate before any repair.

• Reduce speed, avoid towing, and safely park
• Request towing to 107 Andover St (Route 114), Danvers, MA 01923
• Check current offers: service specials

Your appointment begins with a professional OBD-II scan to capture stored and pending DTCs on the 2018 Dodge Durango, followed by a freeze-frame data review to see the exact conditions when the fault occurred. A technician then performs targeted isolation testing—visual inspections, smoke testing for EVAP leaks, sensor signal checks, and ignition verification on the 3.6L V6. Findings are documented with a written estimate before any repair is performed, so you can approve work with confidence. If additional testing is needed, we explain options and next steps clearly. We use Mopar and OEM parts to preserve performance and emissions compliance. Ready to move forward? Book online now to lock in a convenient time and review current offers.

Schedule service or see service specials today.

Serving the North Shore and Greater Boston areas—including Peabody, Beverly, Lynnfield, Andover, and Salem—our Danvers facility pairs factory scan tools with technician expertise for accurate results on the 2018 Dodge Durango. Dealer-level equipment retrieves manufacturer-specific data and runs bidirectional tests that generic readers can’t. That matters when separating an EVAP leak from a sensor fault or confirming misfire root cause before parts replacement. Seasonal temperature swings can aggravate EVAP and cold-start issues; a structured diagnostic process prevents guesswork and protects your catalytic converter. You’ll receive a clear, written estimate before any repair and updates throughout your visit. Find us at 107 Andover St (Route 114), Danvers, MA 01923.

Schedule your appointment or explore service specials, then follow Route 114 to our modern showroom and service center.

On a 2018 Dodge Durango, frequently seen codes include EVAP small/large leak (often a loose or failing gas cap or hose), O2 sensor circuit and heater performance (upstream/downstream sensors aging), catalyst efficiency below threshold (possible converter degradation), mass air flow/performance concerns, and cylinder misfire codes (ignition coils, plugs, or fuel delivery). Ignoring misfire or catalyst-related DTCs can overheat and damage the catalytic converter, turning a minor repair into a major expense. EVAP leaks left unresolved can also prevent emissions readiness and cause inspection failures in Massachusetts. Addressing these codes promptly restores drivability, fuel economy, and emissions compliance.

Bring your 2018 Dodge Durango to Herb Chambers Chrysler Dodge Jeep RAM FIAT of Danvers in Danvers for an accurate diagnosis — schedule service.