The 2020 Hyundai Santa Fe features 4-cylinder engines—the 2.4L MPI or 2.0L turbocharged engine. Both configurations contain only cylinders 1 through 4. When P0306: Cylinder 6 Misfire Detected appears, you're encountering an anomalous code.
Current Generation Santa Fe
The fourth-generation Santa Fe (2019+) eliminated V6 options, focusing on turbocharged 4-cylinder efficiency. No cylinder 6 exists in any current Santa Fe configuration. P0306 is a diagnostic anomaly.
Why This Erroneous Code Appears
Scanner databases from older V6 Santa Fe generations cause confusion. Generic scanners may misinterpret current protocols. Aftermarket devices create potential 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. Focus on legitimate misfire codes (P0301-P0304).
Efficient Power
The Santa Fe's turbocharged 4-cylinder provides strong performance with good fuel economy. Use valid codes for actual concerns.