A P0302 code on your 2022 BMW 5 Series indicates the engine management system has detected misfires in cylinder 2. The G30/G31 5 Series uses the B48 2.0L turbo in 530i or the B58 3.0L turbo in 540i models. Each engine has specific diagnostic considerations for misfire resolution.
G30 Engine Options
The B48 produces 248 horsepower with twin-scroll turbocharging. The B58 delivers 335 horsepower from the inline-6 configuration. Both engines are positioned longitudinally with cylinder 2 second from the timing end. Direct injection is standard on both powertrains.
Common Misfire Causes
Direct injection carbon buildup begins developing on intake valves. Ignition coil failure occurs from turbo heat exposure. Spark plug wear accelerates under boost pressures. High-pressure fuel system issues affect fuel delivery. Boost leaks can cause lean misfires.
Symptom Recognition
The executive sedan displays rough idle, vibration, and hesitation with misfires. The smooth inline engine character becomes noticeably disrupted. BMW's adaptive transmission responds to reduced power output. Check engine light accompanies the condition.
Diagnostic and Repair Approach
Identify engine type. Use BMW-compatible diagnostic equipment. Inspect ignition components on cylinder 2. Check boost system integrity. Evaluate carbon accumulation with borescope. Given the newer model year, warranty coverage should apply to defect-related issues.