A P0302 code on your 2022 Hyundai Tucson indicates the engine control module has detected misfires in cylinder 2. The fourth-generation Tucson introduced for 2022 offers multiple powertrain options: the 2.5L Smartstream four-cylinder, 1.6L turbocharged hybrid, and 1.6L plug-in hybrid. Each configuration requires different diagnostic approaches.
New Generation Powertrains
The redesigned Tucson features all-new engines. The 2.5L Smartstream is naturally aspirated with multi-port injection. The hybrid and plug-in hybrid use a 1.6L turbo GDI engine paired with electric motors. Cylinder 2 is positioned second from front on all inline-4 configurations.
2.5L Smartstream Considerations
The 2.5L uses traditional port injection, reducing carbon buildup concerns. Ignition coil and spark plug issues are primary misfire causes. Fuel injector problems and vacuum leaks can also cause cylinder-specific misfires. The engine includes advanced features like integrated thermal management.
Hybrid/PHEV Specifics
The 1.6L turbo in hybrid models uses direct injection and operates intermittently with electric assistance. This operation pattern can affect spark plug condition. Boost pressure irregularities and DI carbon buildup are potential issues. The hybrid control system coordinates engine and motor operation.
Symptom Recognition
Four-cylinder misfires produce noticeable symptoms: rough idle when engine is running, hesitation, and vibration. Hybrid models may mask symptoms during electric operation. The check engine light illuminates when misfires are detected.
Diagnostic and Repair Strategy
Identify your powertrain type first. Scan for all codes including hybrid system codes. Inspect ignition components. Test fuel system appropriate to injection type. Hybrid models may require dealer diagnosis for complex system interaction issues. Given the newer model year, warranty coverage should apply.