When your 2022 Genesis G70 triggers the P0303 code, the engine control module has identified consistent misfires in cylinder 3. The sport sedan offers powerful turbocharged four-cylinder and V6 options.
G70 Engine Options
The 2022 G70 offers the 2.0L turbocharged four-cylinder (252 hp) or 3.3L twin-turbo V6 (365 hp). On the inline-4, cylinder 3 is third from the front. On the V6, cylinder 3 is on one bank.
Common Causes
- Ignition Coil Failure: Turbo/twin-turbo applications stress ignition
- Spark Plug Issues: High-performance engines require specific plugs
- Boost System Leaks: Charge pipes and intercooler connections
- Fuel Injector Problems: Direct injection deposits
- Carbon Buildup: GDI technology leads to valve deposits
Diagnostic Approach
Use a Genesis/Hyundai compatible scanner for detailed diagnostics. Monitor boost pressure and misfire counts. The twin-turbo V6 has higher performance demands. Test ignition components systematically.
Repair Solutions
Replace failed ignition coils with OEM components. Install Genesis-specified spark plugs. Repair boost system leaks. Address carbon buildup through professional cleaning.