A P0303 diagnostic code on your 2024 Genesis G70 indicates the powertrain control module has detected repeated misfires in cylinder 3. The 2024 G70 continues with refined turbocharged four-cylinder and V6 options.
2024 G70 Powertrains
The 2024 G70 offers the 2.0L turbo (252 hp) or 3.3L twin-turbo V6 (365 hp). Cylinder 3 location varies by engine—third from front on the inline-4, on one bank of the V6.
Typical Causes
- Ignition Coil Problems: High boost stresses ignition
- Spark Plug Condition: Performance 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.