2016 Chrysler 300 Check Engine Light in Danvers, MA

The check engine light (MIL) means your 2016 Chrysler 300’s OBD-II system detected a fault and set a diagnostic trouble code (DTC) identifying the affected system.

This warning can range from minor (e.g., EVAP leak from a loose gas cap) to serious (e.g., misfire that can overheat the catalytic converter). In Danvers, MA, our team reads the stored code and freeze-frame data to determine why the light came on and whether it’s safe to continue driving. A steady light signals a non-urgent issue; a flashing light indicates a severe misfire that needs immediate attention.

• OBD-II stores a specific DTC (e.g., P0300, P0442, P0420)
• Freeze-frame data captures conditions when the fault occurred
• Severity ranges from emissions system leaks to drivability faults

Common causes include O2 sensor faults, EVAP leaks, mass airflow (MAF) issues, catalytic converter efficiency codes, and engine misfires.

On the 2016 Chrysler 300, these categories cover most MIL complaints we see across the North Shore. Temperature swings can aggravate EVAP leaks, while aging sensors or ignition components can trigger efficiency and misfire codes. We confirm the root cause using Chrysler diagnostic workflows rather than relying solely on a generic code read.

• O2/AF sensor aging can skew fuel trims (rich/lean)
• Loose/damaged gas cap and EVAP hoses cause small leak codes
• Ignition coil, plug wear, or injector issues can cause misfires

If the light is steady, drive cautiously to a service facility; if it’s flashing, stop driving and seek help immediately to avoid catalytic converter damage.

A steady MIL often points to an emissions-related issue that is not immediately hazardous, though performance and fuel economy may suffer. A flashing light indicates an active misfire severe enough to overheat the catalyst. If you’re nearby in Danvers or surrounding towns, schedule a prompt inspection to prevent higher repair costs.

• Steady light = non-urgent but needs timely diagnosis
• Flashing light = misfire; continued driving risks costly damage
• Schedule service for an evaluation

Parts stores read codes; our dealership performs full diagnostics with factory scan tools, guided tests, and a written estimate.

A single DTC can have multiple causes, and replacing parts based on a code alone often misses the true fault. Our OEM-trained technicians access Chrysler-specific data, perform isolation testing, and verify fixes before recommending repairs. You’ll receive clear findings, options, and timing to make an informed decision.

• Factory scan access to proprietary Chrysler data and tests
• Guided diagnostics to pinpoint root cause, not just the symptom
• Documented results and service specials when available

No—resetting clears DTCs and sets readiness monitors to “Not Ready,” which typically fails Massachusetts OBD emissions until drive cycles complete.

An inspection station checks both for stored codes and readiness status. After a reset, your 2016 Chrysler 300 must complete specific drive cycles so monitors can run and report “Ready.” The fastest route to a pass is proper diagnosis and repair, followed by monitor completion before inspection.

• Reset = temporary light off but “Not Ready” monitors
• Drive cycles needed for EVAP, O2, catalyst, and misfire checks
• Fixing the cause prevents the light from returning mid-cycle

0 miles—pull over safely and arrange service immediately to protect the catalytic converter.

A flashing MIL signals an active misfire that can overheat and melt catalyst substrates within minutes. Continued driving risks more expensive repairs and potential power loss. Have the 2016 Chrysler 300 towed or carefully move it a short distance off the roadway, then schedule a diagnostic.

• Flashing = severe misfire and high catalyst temperatures
• Stop driving to prevent converter and engine damage
• Schedule an appointment for testing

Your visit begins with an initial OBD-II scan to retrieve current and pending codes along with freeze-frame data from your 2016 Chrysler 300. A service advisor explains findings and next diagnostic steps before any repair work. Technicians then perform targeted tests—such as smoke testing the EVAP system, ignition and fuel checks for misfires, and live data analysis for oxygen sensor or MAF concerns. You’ll receive a written estimate outlining confirmed faults and recommended repairs so you can choose how to proceed. If you’d like to time your visit with offers, review our service specials. Ready to move forward? Use our online tool to schedule service at a convenient time.

Herb Chambers Chrysler Dodge Jeep RAM FIAT of Danvers supports drivers across the North Shore and Greater Boston—including Peabody, Beverly, Lynnfield, Andover, and Salem—with factory-level diagnostics for the 2016 Chrysler 300. We differentiate between a quick code read and a full diagnosis by reviewing freeze-frame data, running guided tests, and confirming the fault before recommending repairs. New England temperature swings can stress EVAP components and sensors, so we verify leaks and data integrity rather than guessing at parts. Our modern service facility at 107 Andover St (Route 114) makes it easy to plan a visit, review findings, and approve work. Have questions or need directions? Check our site, browse service specials, and schedule an appointment.

The 2016 Chrysler 300 commonly presents emissions and drivability codes. P0442 (small EVAP leak) often points to a loose gas cap or minor hose leak; ignoring it can lead to failed inspections. P0300–P0306 (random/cylinder-specific misfire) risks catalytic converter damage and rough running if not fixed promptly. P0420 (catalyst efficiency) may indicate an aging converter or unresolved misfires upstream; delaying repairs can increase fuel consumption and further stress the exhaust aftertreatment. Mass airflow and oxygen sensor codes can skew air-fuel ratios, harming performance over time. Bring your 2016 Chrysler 300 to Herb Chambers Chrysler Dodge Jeep RAM FIAT of Danvers in Danvers for an accurate diagnosis — schedule service.