A P0302 code on your 2022 Hyundai Sonata indicates the powertrain control module has detected misfires in cylinder 2. The 2022 Sonata offers the 2.5L Smartstream, 1.6L turbocharged, and 2.0L hybrid powertrains. The Sonata N Line features a higher-output 2.5L turbo. Understanding your specific engine helps target diagnosis effectively.
Engine Lineup Overview
All Sonata engines are inline-4 with cylinder 2 positioned second from the timing chain end. The 2.5L Smartstream uses CVVD technology and multi-port injection. The 1.6L and 2.5L turbos use direct injection. The hybrid pairs a 2.0L GDI with electric motor assistance.
Common Misfire Sources
Ignition coil and spark plug failures affect all engine types. Direct injection engines (1.6L turbo, 2.5L turbo, hybrid) can develop carbon buildup on intake valves. Turbo models add boost pressure variables. The CVVD-equipped 2.5L has additional valve timing complexity.
Symptom Recognition
Four-cylinder engines display pronounced misfire symptoms: rough idle, vibration, and hesitation during acceleration. The mid-size sedan's refined character is compromised when cylinder 2 misfires. Check engine light illumination accompanies the condition.
Diagnostic Process
Identify your powertrain type. Scan for all codes including hybrid or turbo-specific codes. Inspect ignition components on cylinder 2. Test fuel system appropriate to injection type. Turbo models require boost pressure verification. Compression testing confirms mechanical health.
Repair Recommendations
Standard ignition maintenance resolves most misfire conditions. Direct injection engines may require carbon cleaning at higher mileages. Turbo system issues require specialized diagnosis. Given the newer model year, warranty coverage should apply to defect-related repairs.