123432 Apr 2026

The car has no boost and runs with reduced power.

The physical wastegate flap inside the turbo is stuck, damaged, or has too much play. 123432

The actuator motor itself is failing.

Faults can sometimes trigger after a complete disconnection of the battery. The car has no boost and runs with reduced power

BMW 328i driver terrain malfunction advice needed - Facebook 123432

The turbo has been overheating, causing the wastegate flap seat to become loose and move.

The emissions warning light illuminates. Cold Start Noise: Noise 20-30 seconds after start-up. Common Associated Codes