Frequently Asked Questions

What does it mean when the check engine light comes on in a 2018 Hyundai Ioniq Plug-In Hybrid?

• It signals the vehicle’s onboard diagnostics detected an issue — anything from a loose gas cap to an emissions or battery-management problem.
• At Stevinson Hyundai in CO we use OEM-grade scanners and factory-trained technicians to pinpoint the cause quickly and accurately.
• Addressing codes promptly often reduces repair cost and prevents secondary damage to hybrid battery systems and powertrain components.
• Repairs covered under warranty must be performed at a certified dealership to preserve coverage and warranty benefits.
• We offer service financing so you can get the repair now and pay later; to book, please schedule service.

How long does a check engine light service take?

• Typical diagnostics are completed in about 45–90 minutes; more complex repairs can take longer depending on parts and root cause.
• At Stevinson Hyundai we prioritize quick turnarounds using certified technicians and stocked OEM parts for many common issues.
• Fast, accurate diagnostics mean less downtime and lower long-term cost compared with repeated trial repairs.
• Check our current service specials for bundled offers and discounts on follow-up repairs.
• To secure a convenient time, please schedule appointment online.

How much does a check engine light diagnostic cost for a 2018 Hyundai Ioniq Plug-In Hybrid?

• Diagnostic fees vary, but our pricing is competitive — often less than independent shops while providing higher-level factory service and OEM parts.
• Choosing Stevinson Hyundai gives immediate and long-term savings through accurate diagnosis, warranty protection, and fewer repeat repairs.
• We clearly explain findings and provide itemized repair estimates before any work begins so you can make informed decisions.
• Ask our service advisors about financing options to manage the cost today and pay over time.
• To see if any promotions apply, view our service specials and then schedule service.

What is the most common reason for check engine light on a 2018 Hyundai Ioniq Plug-In Hybrid?

• Common causes include loose fuel cap, oxygen sensor faults, EV/hybrid battery management alerts, and emissions system faults.
• For plug-in hybrids like the 2018 Hyundai Ioniq Plug-In Hybrid, battery-system and regen-braking sensors are common sources of codes.
• Proper diagnosis at Stevinson Hyundai prevents misdiagnosis, protects your hybrid battery, and helps maintain fuel and electric range efficiency.
• Warranty-covered repairs must be performed at a certified dealership to remain valid; our factory-trained techs are certified for these systems.
• Book a convenient visit using our online scheduler to get professional attention fast: schedule service.

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

• Start with the simple: ensure the gas cap is tightened; a loose cap often triggers emissions-related codes.
• If the light stays on, avoid delays — bring the vehicle to Stevinson Hyundai for a full scan to protect hybrid components and battery life.
• Our service team will explain immediate steps, any temporary driving limitations, and estimate repair needs so you understand time and cost.
• Remember that dealership service often yields immediate and long-term savings through accurate diagnosis, OEM parts, and warranty preservation.
• To get an appointment, schedule service now and check our service specials for potential savings.