Frequently Asked Questions

What does it mean when the check engine light comes on in a 2018 Chevrolet Equinox?

• It signals the vehicle's computer detected an issue — anything from a loose gas cap to an emissions or sensor fault.
• Common causes include oxygen sensor faults, catalytic converter concerns, ignition coil or misfire, and EVAP system leaks; some can affect fuel economy and long-term engine health if ignored.
• Our dealership often costs less than independent shops while providing factory-trained technicians, OEM parts, and warranty-backed repairs; this yields immediate and long-term savings through better performance and fewer repeat visits.
• For warranty-covered repairs, work must be completed at a certified dealership to preserve coverage; we handle warranty diagnostics and repairs transparently.
• Ready to act? You can schedule service online and review current service specials.

How long does a check engine light service take?

• Diagnostics typically take 30–60 minutes; simple fixes like a loose cap or battery replacement can be same-day services.
• More involved repairs — sensors, ignition, or exhaust components — may require parts and a longer stay, but we keep you informed with clear time estimates and options.
• We prioritize quick turnarounds using OEM parts and proven procedures, delivering reliable results that save you money over time.
• We offer service financing so you can get needed repairs now and pay over time without delay.
• To get started, schedule service or check our service specials for savings.

How much does a check engine light diagnostic cost for a 2018 Chevrolet Equinox?

• Our dealership provides competitive diagnostic pricing backed by certified technicians and a clear repair plan — many customers find we cost less than independent shops once you factor in accuracy and warranty protection.
• Diagnostics identify root causes quickly to avoid unnecessary parts replacement and long-term cost escalation.
• We emphasize immediate and long-term savings: accurate diagnostics, OEM parts, and technician expertise reduce repeat repairs and extend vehicle life.
• Ask about available service specials and our financing options to make repairs affordable.
• Book your visit now at schedule appointment.

What is the most common reason for check engine light on a 2018 Chevrolet Equinox?

• Most frequently it's an emissions-related sensor (oxygen sensor) or a loose/faulty gas cap, though misfires and EVAP leaks are common as well.
• If left unaddressed, small sensor issues can lead to poor fuel economy, higher emissions, and costly catalytic converter damage.
• Our factory-trained technicians quickly pinpoint the problem to minimize downtime and expense, preserving vehicle value and performance.
• We stand behind repairs with warranty coverage; warranty work must be performed at a certified dealership to remain valid.
• To protect your vehicle, schedule service and review current service specials.

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

• Start with basic checks: ensure the gas cap is secure, listen for odd noises, and note any performance changes like rough idle or loss of power.
• If the vehicle struggles to start or the light flashes, do not drive far — flashing often indicates a serious misfire that can damage the catalytic converter.
• Bring your 2018 Chevrolet Equinox to Larry H. Miller Chevrolet Murray for fast diagnostics, battery testing, and any necessary battery replacement to restore reliable starts.
• We offer transparent estimates, OEM parts, and service financing to make repairs manageable and cost-effective in both the short and long term.
• To arrange an inspection, schedule service or check our service specials.

2018 Chevrolet Equinox Check Engine Light Codes

At Larry H. Miller Chevrolet Murray in Murray, UT, our technicians frequently diagnose common check engine codes on the 2018 Chevrolet Equinox such as P0420 (catalyst system efficiency), P0300–P0304 (random or cylinder misfires), P0171/P0174 (system too lean), and various oxygen sensor codes. Each code points to specific risks: ignoring P0420 can escalate to expensive catalytic converter replacement; unresolved misfires (P0300 series) damage ignition components and catalytic converters; uncorrected lean codes increase engine wear and lower fuel economy. We provide immediate, transparent estimates and explain cost vs. risk so customers understand savings by fixing issues early. Our diagnostic process includes battery health tests (many engine-light symptoms start with weak batteries) and electrical system inspections to rule out charging faults. Because we use OEM parts and certified procedures, repairs completed at our dealership deliver lasting performance and protect warranties. For trustworthy service and efficient scheduling, schedule service or view our service specials for seasonal offers.

2018 Chevrolet Equinox Check Engine Light Reset

Resetting the check engine light on a 2018 Chevrolet Equinox is straightforward when the root cause is resolved, but a simple reset without proper repair can hide recurring issues. At Larry H. Miller Chevrolet Murray, we perform a full diagnostic scan, repair the underlying fault, and then reset codes to ensure the condition does not return. Using dealership service protects your vehicle: OEM parts, genuine updates to your vehicle’s control modules, and certified technicians ensure repairs are reliable. We’ll document repairs and explain how the reset preserves long-term engine health and fuel economy. For customers concerned about cost, our transparent pricing and available service financing mean you can address immediate needs today and pay over time, maximizing long-term savings through fewer repeat visits. Before any reset, we walk you through warranty implications — warranty-covered work must be performed at a certified dealership — and apply any applicable service specials. To proceed, schedule appointment online.

Check Engine Light Flashing

A flashing check engine light on a 2018 Chevrolet Equinox is a signal to stop driving and seek immediate attention. Flashing typically indicates active misfire conditions that can overheat and damage the catalytic converter within minutes, leading to much higher repair costs. At Larry H. Miller Chevrolet Murray we prioritize flashing-light cases — our technicians perform rapid diagnostics, battery and charging checks, ignition system tests, and fuel system inspections to identify whether the issue is ignition, fuel, sensor, or battery related. We also handle battery replacements with OEM-grade batteries and test charging systems to prevent recurrence. Our service process emphasizes transparency: clear estimates, recommended repairs, and available service financing to make urgent repairs manageable. Check our current service specials for potential savings. If you see a flashing light, do not delay — schedule service online or contact Larry H. Miller Chevrolet Murray to protect your Equinox and get back on the road safely.