Frequently Asked Questions

What does it mean when the check engine light comes on in a 2019 Subaru Impreza?

• It signals that the vehicle’s onboard diagnostics detected an emissions, engine, or sensor issue. Common causes include oxygen sensor faults, loose gas cap, catalytic converter problems, or misfires.
• At Mike Shaw Subaru Greeley our factory-trained technicians use OEM diagnostic tools to identify the exact code and explain repair options clearly, helping you weigh immediate cost and long-term savings.
• Many repairs are covered under warranty; any warranty repairs must be completed at a certified dealership to preserve coverage and vehicle longevity.
• To address the problem quickly, schedule service online — we offer transparent pricing and service financing so you can get repairs now and pay later.
• Check our service specials for current offers that lower your out‑of‑pocket cost while delivering OEM parts and certified care.

How long does a check engine light service take?

• Diagnostics typically take 30–90 minutes depending on code complexity and whether live data or road testing is needed.
• If parts or repairs are required, most common services can be completed the same day; our team in Greeley, CO coordinates parts and keeps you informed every step of the way.
• We balance speed with accuracy: quick diagnostics prevent misdiagnosis and save you money over time compared with repeat visits.
• Book a convenient time to schedule appointment; you can also review current value through trade or service specials while you wait.
• Ask about service financing to spread payments—get the work done today and avoid escalation of damage that increases repair costs later.

How much does a check engine light diagnostic cost for a 2019 Subaru Impreza?

• Mike Shaw Subaru Greeley offers competitively priced diagnostics and often costs less than many independent shops while providing factory-trained technicians and OEM-grade testing.
• Diagnostics lead to immediate and long-term savings by ensuring correct repairs the first time and preserving vehicle warranty coverage when applicable.
• We publish service pricing and post current service specials to help reduce your expense.
• Remember: warranty repairs must be handled by a certified dealership to maintain coverage—our team will confirm warranty applicability during your visit.
• To get an exact estimate, schedule service or call our service department for a personalized quote based on diagnostic results.

What is the most common reason for check engine light on a 2019 Subaru Impreza?

• The most frequent causes include faulty oxygen sensors, loose or damaged gas caps, ignition misfires, and mass airflow sensor issues.
• If left unaddressed, these problems can reduce fuel economy, increase emissions, and cause damage to the catalytic converter—raising repair costs significantly.
• Our technicians in Greeley, CO prioritize fast, correct diagnosis to avoid escalation and to protect your vehicle’s long‑term value.
• We recommend checking for service specials before your visit; and if the repair is covered under warranty, it must be performed at a certified dealership to keep coverage intact.
• Use our online tool to schedule appointment and get a precise plan and cost estimate.

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

• Start with simple checks: ensure the gas cap is tight and inspect for obvious engine odors or performance changes.
• Even if the issue seems minor, bring your 2019 Subaru Impreza to Mike Shaw Subaru Greeley for a professional scan—our OEM tools reveal the exact trouble code and recommended fix.
• We provide transparent estimates, OEM parts, and certified technicians who protect both immediate reliability and long-term resale value.
• Schedule service online at any time via schedule service and review current service specials to save.
• Ask about our service financing options so you can address issues promptly and avoid costlier repairs down the road.

Check Engine Light Flashing

The check engine light flashing on a 2019 Subaru Impreza signals an active misfire or a condition that may cause immediate engine damage or catalytic converter harm. A flashing light is a higher priority than a steady illumination because it indicates the engine is experiencing irregular combustion events that can overheat components and dramatically increase repair costs if driven. At Mike Shaw Subaru Greeley in Greeley, CO, our certified technicians use Subaru-specific diagnostic equipment to capture misfire data, fuel trim readings, and ignition timing to pinpoint whether the issue stems from spark, fuel delivery, compression, or sensor failure. We emphasize quick containment and accurate repair to prevent secondary damage and to preserve long-term value; resolving misfires promptly also improves fuel economy and reduces emission levels. We encourage customers to avoid extended driving when the light is flashing and to schedule service immediately. Check our service specials and ask about service financing to get priority attention now and pay over time. Our team will explain the diagnosis, warranty implications, and the most cost-effective repair path so you leave confident in the safety and reliability of your Impreza.

2019 Subaru Impreza Check Engine Light Reset

Resetting the check engine light on a 2019 Subaru Impreza can be done with a scan tool, but a reset without proper repair risks masking an ongoing problem and voiding warranty protections. At Mike Shaw Subaru Greeley we advise a full diagnostic before any reset: our technicians clear codes only after addressing root causes and documenting repairs, ensuring transparency and long-term savings. Using OEM equipment and Subaru-approved procedures preserves diagnostic history and vehicle integrity—important for future service, trade value, and warranty claims. We provide written estimates, OEM parts, and technician certification so you understand both the work performed and why it was necessary. If a vehicle is covered under warranty, repairs must be completed at a certified dealership to maintain coverage; our team will verify eligibility and coordinate any warranty work. For convenience, you can schedule appointment online and review current service specials. We also offer service financing so you can address repairs today and manage payments over time. Trust our Greeley service center for accurate resets that protect your Impreza’s performance and resale value.

2019 Subaru Impreza Check Engine Light Codes

Common check engine light codes for a 2019 Subaru Impreza include P0420 (catalyst efficiency), P0300-P0304 (random/multi-cylinder misfires), P0171/P0174 (lean condition), and P0130-P0167 family codes related to oxygen sensors. Each code has cost implications if ignored: unresolved misfires can damage the catalytic converter and lead to thousands in repairs; a failing oxygen sensor reduces fuel economy and increases emissions; ignoring a P0420 can eventually necessitate catalytic converter replacement. At Mike Shaw Subaru Greeley we translate codes into clear options—repair, replace, or monitor—so you can make informed decisions that save money over time. Our local Greeley, CO service center prioritizes fast turnarounds, certified Subaru technicians, OEM parts, and warranty documentation. We provide a transparent quote after diagnostics and highlight immediate and long-term savings of fixing issues early. To arrange diagnostics and see current offers, schedule service or check our service specials. Our team helps protect your Impreza’s performance and keeps you confidently on the road.