When your 2022 BMW 5 Series displays the P0305 code, the diagnostic approach depends on your engine. The G30 2022 5 Series offers inline-six and inline-four options. P0305 is valid on 540i's inline-six but anomalous on 530i's four-cylinder.
2022 5 Series Engine Options
The 2022 5 Series offers the 2.0L B48 turbo I-4 (248 hp in 530i), 3.0L B58 turbo I-6 (335 hp in 540i), and 4.4L N63 twin-turbo V8 (523 hp in M550i). Six-cylinder and V8 models have cylinder 5.
Inline-Six/V8 Diagnosis
On the B58 I-6, 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.
Four-Cylinder Models
The 530i has a four-cylinder where P0305 is anomalous.