A P0302 code on your 2022 BMW X3 indicates the engine management system has detected misfires in cylinder 2. The G01 X3 uses the B48 2.0L turbo in xDrive30i or the B58 3.0L turbo in M40i models. Each engine has specific diagnostic considerations for misfire resolution.
X3 Engine Platform
The B48 produces 248 horsepower while the B58 delivers 382 horsepower with M40i tuning. Both inline engines position cylinder 2 second from the timing end. Direct injection and turbocharging are standard, with associated maintenance requirements for carbon and boost systems.
Common Misfire Causes
Direct injection carbon buildup begins developing on intake valves over time. Ignition coil degradation from turbo heat is common. Spark plug wear accelerates under boost pressures. High-pressure fuel system issues affect cylinder-specific delivery. Boost leaks can cause lean misfires.
Symptom Recognition
The compact SUV displays rough idle, vibration, and hesitation with misfires. BMW's xDrive system responds to power variations. The refined driving character suffers when cylinder 2 misfires. Check engine light accompanies the condition.
Diagnostic and Repair Approach
Identify engine type. Use BMW-compatible diagnostic equipment for detailed analysis. Inspect ignition components. Check boost system integrity. Evaluate carbon buildup. Given the newer model year, warranty coverage should apply to defect-related issues.