The P0303 diagnostic trouble code on your 2024 Genesis GV80 indicates the powertrain control module has detected consistent misfires in cylinder 3. The 2024 GV80 continues with refined turbocharged four-cylinder and V6 powertrains.
2024 GV80 Powertrains
The 2024 GV80 offers the 2.5L turbo (300 hp) or 3.5L twin-turbo V6 (375 hp). The GV80 Coupe may have different specifications. Cylinder 3 location varies by engine configuration.
Typical Causes
- Ignition Coil Problems: High boost stresses ignition
- Spark Plug Condition: Turbo engines require quality plugs
- Boost System Integrity: Leaks cause lean conditions
- Fuel Injector Issues: Direct injection deposits
- Carbon Deposits: GDI valve accumulation
Diagnostic Process
Use Genesis diagnostic equipment for detailed access. Monitor boost and misfire data. Test ignition components systematically. Check for applicable TSBs.
Repair Recommendations
Replace faulty ignition coils with OEM parts. Install properly specified spark plugs. Repair boost leaks. Dealer service ensures warranty coverage.