BMW e61. 520d. Fault 449a

[barth71]

Hi
I have problem with my bmw e61 520d. Engine M47. I have fault. 449A. Turbo actuator fault. I replace actuator but the error is still. I check wiring but is ok.
Anybody know whats check ?
Thank you

[Dunker]

If wiring to fusebox and ecu is ok from actuator then maybe ecu driver. Is there good power feed to actuator. You have checked the fuse? Does arm move when tested from diagnostic? Put 21w bulb in circuit instead of actuator - will that light up doing same test.

[barth71]

thank you for your information but i check this and all is fine. Maybe i must replace ecu.
Thank you