A P0302 code on your 2022 Kia Carnival indicates the engine control module has detected misfires in cylinder 2. The Carnival minivan (replacing the Sedona) is powered by the 3.5L Lambda III GDI V6 producing 290 horsepower. This direct-injection V6 provides excellent family-vehicle performance with specific maintenance considerations.
Lambda III V6 Overview
The 3.5L Lambda III is a 60-degree V6 with dual overhead cams and gasoline direct injection. Cylinder 2 is positioned on the rear bank toward the firewall. The direct injection system operates at high pressure for efficient fuel delivery. This newer iteration of the Lambda engine family includes refinements for improved reliability.
Common Misfire Causes
Direct injection engines can develop carbon buildup on intake valves over time since fuel doesn't wash over them. Ignition coil degradation from heat exposure is common on V6 engines. Spark plug wear reduces ignition effectiveness. Fuel injector issues including clogging can affect cylinder-specific delivery.
Symptom Recognition
The smooth V6 character becomes noticeably rough when cylinder 2 misfires. The family minivan exhibits vibration through the cabin, rough idle, and hesitation. Passengers may notice unusual engine behavior. Check engine light illumination accompanies detected misfires.
Diagnostic Approach
Scan for all codes and freeze frame data. Access cylinder 2 on the rear bank for inspection. Test ignition coil and spark plug condition. Borescope inspect intake valves for carbon. Test fuel injector operation. Compression testing verifies mechanical health.
Repair Solutions
Replace ignition components as needed with quality parts. Address carbon buildup through appropriate cleaning methods. Service fuel injectors if testing indicates issues. Given the newer model year, warranty coverage should apply to defect-related repairs.