Frequently Asked Questions

What does it mean when the check engine light comes on in a 2021 Volkswagen Passat?

• It signals your vehicle’s onboard diagnostics detected a fault — anything from a loose gas cap to an oxygen sensor, EVAP leak, or misfire. Left unaddressed, small issues can become costly repairs that harm fuel economy and emissions.
• At Larry H. Miller Volkswagen Lakewood our certified technicians use factory diagnostic tools to pinpoint causes quickly. We often cost less than independent shops while delivering OEM parts, transparent estimates, and long-term savings through correct repairs and warranty protection.
• If the repair is covered under warranty it must be performed at a certified dealership to remain valid; we’ll explain coverage and help you use service financing if you prefer to pay over time.
• Ready to act? Please schedule service or check our service specials before you arrive.

How long does a check engine light service take?

• Diagnostics at Larry H. Miller Volkswagen Lakewood typically take 30–60 minutes. Some issues can be identified and repaired the same day; others (like catalytic converter replacement) may require parts and additional time.
• Our service advisors provide clear time estimates up front and keep you informed. Quick-turn repairs and OEM parts help you get back on the road faster with confidence in the work performed.
• We offer service financing and appointment flexibility so you can address the issue now and pay later; to book, schedule appointment online or review our service specials.

How much does a check engine light diagnostic cost for a 2021 Volkswagen Passat?

• Diagnostic fees vary, but many checks start around $89. At Larry H. Miller Volkswagen Lakewood our pricing is competitive and includes detailed reporting and recommended repairs — a smart investment for long-term savings and reliability.
• Because we use OEM parts and factory procedures, repairs often last longer and reduce repeat visits. We’ll present transparent estimates and explain immediate and future savings from correct repairs.
• Ask about current deals and to view service specials. You can also schedule service and discuss financing options with our parts and service team.

What is the most common reason for check engine light on a 2021 Volkswagen Passat?

• Common causes include a loose or faulty gas cap, failing oxygen sensor, EVAP system leaks, and ignition misfires. Each can reduce fuel economy and increase emissions if left unattended.
• Ignoring codes can escalate repair costs — an inexpensive gas cap fix is far cheaper than oxygen-sensor or catalytic-converter replacements. Our technicians diagnose the true root cause quickly to minimize cost.
• We back repairs with dealership warranties; warranty-covered work must be completed at a certified dealership, and we’ll help you use service financing when needed.

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

• First, safely check that the gas cap is tightened. If the light stays on, avoid heavy loads or high speeds and have your vehicle inspected promptly to prevent further damage.
• Schedule a professional scan at Larry H. Miller Volkswagen Lakewood so factory-grade diagnostics identify the issue correctly. Our advisors will share clear options and price estimates before any work begins.
• To get started, schedule service online and review available service specials to maximize savings.