A P0302 code on your 2022 Kia K5 indicates the powertrain control module has detected misfires in cylinder 2. The 2022 K5 continues with the 1.6L turbo, 2.5L naturally aspirated, and high-performance 2.5L turbo GT engine options. Each powertrain has specific diagnostic considerations for misfire resolution.
K5 Engine Lineup
All engines are inline-4 with cylinder 2 positioned second from front. The 1.6L turbo and 2.5L turbo GT use direct injection. The base 2.5L uses multi-port injection. The GT produces an impressive 290 horsepower from its turbocharged four-cylinder.
Direct Injection Considerations
The turbocharged engines using direct injection are susceptible to carbon buildup on intake valves over time. This is a characteristic of GDI technology rather than a defect. Boost pressure irregularities, wastegate problems, and charge system leaks also cause misfires.
Naturally Aspirated 2.5L
The base 2.5L with port injection avoids GDI carbon concerns. Standard ignition and fuel system issues are primary causes. This reliable engine provides straightforward diagnostic and repair paths.
Symptom Identification
Four-cylinder mid-size sedan misfires produce noticeable symptoms: rough idle, vibration, and hesitation. The refined K5 driving experience suffers when cylinder 2 doesn't contribute properly. Check engine light illumination accompanies the condition.
Diagnostic and Repair Strategy
Identify your engine type. Scan for all codes including boost codes. Inspect ignition components. Test fuel system appropriate to injection type. Turbo models require boost evaluation. Given the newer model year, warranty coverage should apply to component defects.