2015 Chevrolet Equinox Check Engine Light in Murray, UT

It means the engine computer stored an OBD-II fault code for a system fault, such as P0442 (EVAP small leak) or P0300 (random misfire).

This indicator signals that your Equinox’s powertrain control module detected a problem affecting emissions or performance. A precise code read and data review tell us which system to test first. At Larry H. Miller Chevrolet Murray in Murray, UT, we use GM factory tools to interpret freeze-frame data and confirm the true cause before any repair. You can schedule an appointment online.

• Examples: P0442 EVAP small leak, P0420 catalyst efficiency, P0300 random misfire
• Factory scan tools read live data and GM-specific information for accurate diagnosis
• View current service specials before you book

The five most common causes are a bad oxygen sensor, EVAP leak (often a loose gas cap), mass airflow (MAF) sensor issues, engine misfire, and catalytic converter efficiency.

On the 2.4L inline-4 Equinox, these faults are typical across city and highway driving in northern Utah. Each code points to a system, but pinpoint testing confirms the failed part or condition. Our Murray team provides data-driven results and a written estimate before work begins—book via our online scheduler.

• Loose/damaged gas cap is a frequent EVAP trigger
• Misfires (plugs/coils) left unchecked can damage the catalytic converter
• Dirty MAF or intake leaks can set lean codes (e.g., P0171)

A steady light means you can drive cautiously to service, but a flashing light means stop driving and arrange towing due to a severe misfire risk.

A flashing MIL can overheat and destroy the catalytic converter quickly. If the light is steady, reduce load and head to our Murray location for diagnosis. We’ll confirm the cause using GM tools and provide next steps. Prefer contactless booking? Schedule service online.

• Flashing MIL = active misfire; continued driving risks costly damage
• Steady MIL = non-urgent but should be checked soon
• Check for a loose gas cap after refueling; if light persists, book a diagnostic

A flashing light signals an active misfire that can damage the catalytic converter, so stop driving and have the vehicle towed for diagnosis.

Misfires dump unburned fuel into the exhaust, overheating the converter and risking engine damage. Our OEM-certified technicians in Murray, UT will verify the cause—spark, fuel, or compression—and document findings with a written estimate. Use our scheduler to request a tow-in time.

• Common misfire triggers: worn spark plugs/ignition coils, injector faults
• Driving with a flashing MIL can turn a minor fix into a major repair
• We test parts before replacing to avoid guesswork

No — Utah OBD-II tests fail if the MIL is commanded on or required readiness monitors are incomplete after a reset.

Clearing codes erases readiness data, and the inspection will flag incomplete monitors. The correct path is to fix the underlying fault and complete a proper drive cycle. Our team in Murray verifies repairs, confirms monitors, and guides you on what to expect at inspection. See our service specials before booking.

• Resetting alone won’t mask an active fault at inspection
• We verify monitors and provide documentation after repair
• Schedule a diagnostic online: book now

A free scan only reads basic codes, while dealer diagnostics use GM factory tools, proprietary data, and pinpoint tests to find the root cause.

Codes have multiple possible causes; replacing the first suggested part can waste money. Our OEM-certified technicians in Murray isolate the exact fault, check GM service information and bulletins, and provide a written estimate before any repair. Start with a proper diagnostic via our online scheduler.

• Access to GM technical service bulletins and proprietary data streams
• Isolation testing (smoke tests, sensor checks) verifies the real issue
• Documentation you can keep for emissions or warranty records

We begin with an interview to capture symptoms, recent fuel-ups, and conditions when the light came on. Next, we perform an initial OBD-II scan and review freeze-frame data to see what the engine computer saw at failure time. A visual inspection follows—hoses, connectors, intake tract—before we run targeted tests such as EVAP smoke testing, MAF correlation checks, and misfire isolation. We validate findings against GM service information and any applicable bulletins, then prepare a written estimate with repair options. No parts are replaced without your approval. Ready to proceed? Schedule service and review current specials before you arrive.

Larry H. Miller Chevrolet Murray serves drivers across the greater Salt Lake City area—South Jordan, West Jordan, Midvale, and Sandy—with factory-level diagnostics for the 2015 Chevrolet Equinox. Our GM scan tools read live data and manufacturer-specific codes that generic readers miss, which helps us pinpoint EVAP leaks, misfires, and sensor faults accurately. Utah’s temperature swings can spotlight issues like small EVAP leaks after refueling or cold-start misfires, so we correlate codes with conditions to prevent repeat faults. Visit us at 5500 S State St, Murray, UT 84107, or simply schedule an appointment online for a time that fits your day.

Several codes appear frequently on the 2015 Chevrolet Equinox: P0442/P0455 (EVAP leaks—often a loose cap or cracked hose), P0300 (random misfire), P0420 (catalyst efficiency), P0171 (system too lean), P0101 (MAF performance), and O2 sensor range/performance codes such as P0131. EVAP codes ignored can trigger repeated MIL events and emissions test failures. Prolonged misfires overheat catalytic converters, turning an affordable fix into a major repair. Lean conditions may cause drivability issues and increased engine wear. Addressing the root cause early protects fuel economy, emissions compliance, and component life. Bring your 2015 Chevrolet Equinox to Larry H. Miller Chevrolet Murray in Murray for an accurate diagnosis — schedule service.