Check Engine Light Flashing

A flashing check engine light on a 2017 Hyundai Sonata Plug-in Hybrid is an urgent warning that indicates a severe misfire or a critical hybrid/engine fault that can cause catalytic converter damage or battery stress. Do not ignore a flashing light: stopping promptly and avoiding high-load driving reduces the risk of permanent damage. At Larry H. Miller Hyundai Peoria in Peoria, AZ, our technicians are factory-trained on Hyundai hybrid systems and use OEM diagnostics to identify root causes—often faster and more accurately than independent shops. We explain repair options clearly, show parts and labor estimates, and emphasize long-term savings from timely service. We also offer service financing so you can address urgent repairs immediately and pay over time. Check our current service specials for discounts, then schedule service online for priority attention and trusted repairs.

2017 Hyundai Sonata Plug-in Hybrid Check Engine Light Reset

Resetting the check engine light on a 2017 Hyundai Sonata Plug-in Hybrid may clear a code temporarily, but it does not fix underlying faults and can mask problems that worsen over time. At Larry H. Miller Hyundai Peoria we recommend a full diagnostic before resetting codes so repairs are completed correctly and warranties remain intact. Our service includes OEM parts, certified technicians, and transparent reporting—so you see the problem, the recommended fix, and the long-term benefits including fuel savings and preserved resale value. We prioritize dealer-level transparency: every repair estimate is explained, and any warranty-covered work must be performed at a certified dealership to remain valid. Take advantage of our express scheduling and service specials, or schedule appointment to have experts handle your reset and any needed repairs.

2017 Hyundai Sonata Plug-in Hybrid Check Engine Light Codes

Common check engine light codes for the 2017 Hyundai Sonata Plug-in Hybrid include oxygen sensor (P013x), catalytic efficiency (P0420), EV system sensor errors, and misfire codes (P0300-P0304). Left unresolved, oxygen sensor issues can increase emissions and decrease MPG, catalytic converter faults can lead to expensive replacement, and misfires risk engine and hybrid system damage. At Larry H. Miller Hyundai Peoria our factory-trained technicians diagnose codes with Hyundai-specific tools and provide clear cost comparisons: quick sensor fixes save money now and prevent costly component failures later. Choosing our dealership in Peoria, AZ means certified repairs, OEM parts, and service financing to make necessary work affordable. Our process is designed for convenience—transparent estimates, comfortable waiting area, and prompt electronic notifications—so you can get back on the road with confidence. To save on diagnosis and repairs, review our service specials and schedule service today.