A P0302 code on your 2023 Kia Telluride indicates the engine control module has detected misfires in cylinder 2. The 2023 Telluride continues with the proven 3.8L Lambda II GDI V6 producing 291 horsepower. This direct-injection V6 has well-documented characteristics for misfire diagnosis.
Consistent Powertrain
The Telluride maintains the Lambda II V6 with its established reputation. Cylinder 2 is on the rear bank of the 60-degree V6. The direct injection system provides efficient fuel delivery. Well-understood diagnostic techniques apply to this engine.
Typical Misfire Causes
GDI carbon buildup develops over time on intake valves. Ignition coil degradation from heat exposure affects rear-bank cylinders more frequently. Spark plug wear reduces ignition efficiency. Fuel injector issues can affect cylinder-specific delivery.
Symptom Identification
V6 misfires produce noticeable symptoms in the large SUV. Rough idle, cabin vibration, and hesitation during acceleration affect the premium driving experience. Check engine light illumination accompanies the condition.
Diagnostic Process
Scan for all codes and freeze frame data. Inspect ignition components on cylinder 2. Borescope inspect intake valves for carbon condition. Test fuel system pressure and injector operation. Compression testing verifies mechanical health.
Repair Options
Replace spark plugs and coils as needed. Carbon cleaning addresses intake valve deposits. Fuel injector service ensures proper delivery. Given the newer model year, warranty coverage should apply to defect-related issues.