When your 2022 BMW X5 displays the P0305 code, the engine control module has detected repeated misfires in cylinder 5. The G05 2022 X5 offers inline-six and V8 options, all with at least six cylinders. P0305 is a legitimate code on all gasoline X5 configurations.
2022 X5 Engine Options
The 2022 X5 offers the 3.0L B58 turbo I-6 (335 hp) and 4.4L N63 twin-turbo V8 (523 hp). Both have cylinder 5.
Diagnosis
On the B58, cylinder 5 is toward the rear. On the V8, cylinder 5 is on one of the banks. Common causes include spark plug wear, ignition coil failure, and carbon buildup.
Diagnostic Steps
Identify engine type. Read codes using BMW diagnostic equipment. Inspect cylinder 5 components. Check for carbon buildup on higher-mileage vehicles.