The 2024 Hyundai Sonata is powered by 4-cylinder engines—the 2.5L MPI or 1.6L turbocharged engine depending on trim. All configurations contain only cylinders 1 through 4. When P0306: Cylinder 6 Misfire Detected appears, you're encountering an anomalous code.
Current Generation Sonata
While older Sonata generations offered V6 options, the current generation (2020+) is 4-cylinder-only. Hyundai discontinued V6 Sonata options to focus on efficient turbocharged and hybrid powertrains. P0306 cannot indicate an actual misfire.
Why This Erroneous Code Appears
Scanner databases may retain codes from older V6 Sonatas. Generic scanners might misinterpret current Sonata protocols. Aftermarket devices can create conflicts. ECU communication errors generate false codes.
Proper Diagnostic Approach
Clear all codes and drive through various conditions. Use Hyundai GDS or professional equipment for accurate readings. Inspect the OBD-II port for damage. Remove aftermarket devices temporarily. Focus on legitimate misfire codes (P0301-P0304).
Striking Design
The Sonata's dramatic styling paired with efficient powertrains makes it competitive in the midsize segment. Use valid codes for actual concerns.