The P0303 diagnostic trouble code on your 2022 Genesis GV70 indicates the engine control module has detected consistent misfires in cylinder 3. The luxury compact SUV offers powerful turbocharged four-cylinder and V6 options.
GV70 Engine Options
The 2022 GV70 offers the 2.5L turbocharged four-cylinder (300 hp) or 3.5L twin-turbo V6 (375 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-output 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 Genesis/Hyundai diagnostic equipment for detailed access. Monitor boost pressure and misfire counts. Test ignition components systematically. The twin-turbo V6 has higher demands.
Repair Solutions
Replace failed ignition coils with OEM components. Install Genesis-specified spark plugs. Repair boost system leaks. Address carbon buildup through professional cleaning.