When your 2023 Hyundai Palisade displays the P0305 code, the engine control module has detected repeated misfires in cylinder 5. The 2023 Palisade continues with the 3.8L Lambda II V6 producing 291 horsepower. With six cylinders, P0305 is a legitimate diagnostic code.
2023 Palisade Powertrain
The 2023 Palisade received a refresh with updated styling and features, but maintains the proven 3.8L V6 paired with an 8-speed automatic. This naturally aspirated engine is the only option on all Palisade trims.
Cylinder 5 Location
On Hyundai's 3.8L V6, cylinder 5 is on the rear bank (toward the firewall) in the center position. The transverse mounting makes this cylinder somewhat challenging to access directly.
Common Causes
On a newer 2023 model, spark plug wear is less likely unless mileage is high. Ignition coil failure can still occur. Manufacturing defects or loose connections are possible. Check for TSBs addressing known issues. Fuel injector problems may cause lean misfires.
Diagnostic Process
Read all codes and freeze frame data. Check for Hyundai TSBs. Verify ignition system connections. Inspect cylinder 5's spark plug and ignition coil. Test fuel injector operation. A 2023 model should have warranty coverage for component failures.