The P0304 code in your 2022 Hyundai Kona indicates the engine control module has detected persistent misfires in cylinder 4. Understanding the subcompact SUV's engine options enables targeted diagnosis for effective repair of this combustion problem.
Understanding P0304 in the 2022 Kona
The 2022 Kona offers multiple powertrains including the 2.0L four-cylinder in base models and the 1.6L turbocharged engine in N Line and higher trims. Both inline-four configurations position cylinder 4 at the rearmost location. Hyundai's engine management identifies cylinder 4 misfires through crankshaft velocity pattern analysis.
Engine-Specific Considerations
The 2.0L naturally aspirated engine faces standard ignition wear patterns. The 1.6L turbo experiences higher ignition demands from boosted cylinder pressures. Both engines use direct injection with associated carbon accumulation potential. The compact engine bay affects cylinder 4 accessibility differently than larger vehicles.
Diagnostic Process
Identify your engine type—base 2.0L or turbo 1.6L. Retrieve all codes and freeze frame data. For turbo models, check for boost-related codes accompanying P0304. Access cylinder 4 and test ignition coil output and spark plug condition. Verify fuel injector operation.
Repair Solutions
Install Hyundai-specified spark plugs appropriate for your engine type. Replace ignition coils showing degraded output. Address fuel system concerns. The compact engine bay requires careful attention during reassembly.